Lesson 20.1: Applying Maths to Shopping, Measurement, Time, and Daily Life
Combine multiple arithmetic operations to solve practical shopping, travel, cooking, and daily routine problems.
⏱️ Reading Time: 15 mins
• ❓ 50 Interactive Practice Questions
🌟
Real-Life Story: Real-Life Maths Word Problems
Karim and his father go to the grocery store with a $50 bill. They buy 3 boxes of cereal at $4 each and 2 cartons of milk at $3 each. Total cost is $12 + $6 = $18. Karim calculates their change: $50 - $18 = $32.
💡 Core Mathematical Concepts: Shopping, Measurement & Daily Math
Focus areas: Shopping bill, change calculation, travel timetable, family budget, multi-step math.
| Concept / Term | Mathematical Definition | Everyday Example |
|---|---|---|
| Total Cost Calculation | Multiply quantity by unit price for each item, then sum all subtotals | (3 × $4) + (2 × $3) = $12 + $6 = $18 |
| Calculating Change Due | Subtract total purchase cost from the cash bill handed to the cashier | $50 bill - $18 cost = $32 change |
| Travel Distance and Fare | Calculating total journey distance or combined ticket costs for family groups | 4 tickets at $7 each = $28 total |
| Budget Tracking | Ensuring total expenses do not exceed total available money | Spent $35 out of $40 budget = $5 saved |
🔍 Practical Classroom & Everyday Examples
Example 1: Writing Down Subtotals
Always write down intermediate subtotals for each item category before adding them up.
Example 2: Checking with Estimation
Round unit prices to nearby friendly numbers to verify that your final answer is reasonable.
⚠️ Watch Out! Common Mistakes to Avoid
Common Error: Multiplying only one item and forgetting the rest
Correction: Make sure every item in the cart is multiplied by its quantity before adding!
Common Error: Subtracting change from total cost instead of bill
Correction: Change = Amount Paid - Total Cost. (Not Cost - Paid).
🎯 Quick Self-Check Challenge
Sara buys 4 notebooks at $3 each and a pencil case for $8. She pays with a $25 gift voucher. How much balance remains on her voucher?
Answer & Explanation:
Total cost: (4 × $3) + $8 = $12 + $8 = $20. Remaining balance: $25 - $20 = $5.
🎯 Key Learning Takeaways
Master Real-Life Maths Word Problems fundamentals.
📄 Printable Worksheets (5 Available)
Download ready-to-print PDFs for offline student practice with separate parent/teacher answer keys.
G3-M-CH20-WS05
A4 • 15 Qs
Real-Life Maths Word Problems — Worksheet 5
Multi-Step Applications & Problem-Solving Strategies (Wildlife Zoo Adventure)
G3-M-CH20-WS04
A4 • 15 Qs
Real-Life Maths Word Problems — Worksheet 4
Multi-Step Applications & Problem-Solving Strategies (Children's Book Fair)
G3-M-CH20-WS03
A4 • 15 Qs
Real-Life Maths Word Problems — Worksheet 3
Multi-Step Applications & Problem-Solving Strategies (School Sports Carnival)
G3-M-CH20-WS02
A4 • 15 Qs
Real-Life Maths Word Problems — Worksheet 2
Multi-Step Applications & Problem-Solving Strategies (City Transit Bus Network)
G3-M-CH20-WS01
A4 • 15 Qs
Real-Life Maths Word Problems — Worksheet 1
Multi-Step Applications & Problem-Solving Strategies (Community Supermarket)
✍️ Lesson Practice Questions (50 Questions)
Solve these real-world challenges online, test your understanding, and reveal instant step-by-step explanations.
1
Short Answer
Hard
2 Marks
Three siblings (Alex, Ben, and Chloe) saved money together. Alex saved twice as much as Ben. Chloe saved $15, which is $5 less than Ben. How much money did all three save altogether?
A
$75
B
$65
C
$70
D
$80
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$75
Step-by-Step Explanation:
Chloe = $15. Ben saved $5 more than Chloe = $15 + $5 = $20. Alex saved twice as much as Ben = 2 × $20 = $40. Total: $40 + $20 + $15 = $75.
2
Short Answer
Hard
2 Marks
A school bus holds 45 passengers. 128 students and 12 teachers are going on a field trip. What is the minimum number of buses needed to transport everyone?
A
4 buses
B
3 buses
C
5 buses
D
6 buses
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
4 buses
Step-by-Step Explanation:
Total people: 128 + 12 = 140 people. 140 ÷ 45 = 3 with 5 people left over. 4 buses are needed so nobody is left behind.
3
Short Answer
Hard
2 Marks
A fruit vendor sells apples at 3 for $2. If a customer buys 12 apples, how much do they pay?
A
$8
B
$6
C
$10
D
$12
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$8
Step-by-Step Explanation:
12 apples ÷ 3 = 4 groups of three. 4 × $2 = $8.
4
Short Answer
Hard
2 Marks
In solving a multi-step word problem, why is drawing a bar model or diagram helpful before doing calculations?
A
It visually organizes the relationship between known parts and the whole, making it clear which operations (+, -, ×, ÷) to perform
B
It replaces the need to do arithmetic
C
It is required for grading only
D
Because bar models always give the final answer automatically
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
It visually organizes the relationship between known parts and the whole, making it clear which operations (+, -, ×, ÷) to perform
Step-by-Step Explanation:
Bar models make the part-whole and comparison relationships visually obvious.
5
Short Answer
Medium
1 Mark
A problem states: 'A teacher packs 28 books into 3 boxes equally. How many books are left over?' Lina calculates 28 ÷ 3 = 9 R 1, and answers '9 books'. What did Lina answer incorrectly?
A
She stated the quotient (number of books per box) instead of the remainder (books left over = 1)
B
28 cannot be divided by 3
C
The remainder is 2
D
Each box gets 8 books
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
She stated the quotient (number of books per box) instead of the remainder (books left over = 1)
Step-by-Step Explanation:
The question asked for books left over (the remainder), which is 1, not the quotient 9.
6
Short Answer
Medium
1 Mark
Tariq reads: 'Adam has 15 stickers. He has 5 more stickers than Bilal. How many stickers does Bilal have?' Tariq calculates 15 + 5 = 20. Why is Tariq incorrect?
A
Adam has more stickers than Bilal, so Bilal has FEWER: 15 - 5 = 10 stickers
B
Stickers cannot be subtracted
C
The answer should be 15 × 5 = 75
D
Adam and Bilal must have equal stickers
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
Adam has more stickers than Bilal, so Bilal has FEWER: 15 - 5 = 10 stickers
Step-by-Step Explanation:
Because Adam has 5 more than Bilal, Bilal must have 15 - 5 = 10 stickers.
7
Fill in the Blanks
Medium
1 Mark
Maya has $50. She buys 2 shirts at the same price and has $14 left. What is the cost of ONE shirt?
A
$18
B
$16
C
$20
D
$22
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$18
Step-by-Step Explanation:
Money spent: $50 - $14 = $36. Cost of one shirt: $36 ÷ 2 = $18.
8
Fill in the Blanks
Medium
1 Mark
Find the missing quantity: [ ? ] tickets at $12 each cost $48 in total.
A
4
B
5
C
3
D
6
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
4
Step-by-Step Explanation:
Divide total by unit price: $48 ÷ $12 = 4 tickets.
9
Short Answer
Medium
1 Mark
A bookshop had 85 storybooks on Monday. They sold 34 books on Tuesday and 26 books on Wednesday. How many books remain on the shelf?
A
25 books
B
20 books
C
30 books
D
15 books
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
25 books
Step-by-Step Explanation:
85 - (34 + 26) = 85 - 60 = 25 books.
10
Short Answer
Medium
1 Mark
A family travels on a bus. Adult tickets cost $8 each and child tickets cost $4 each. What is the total cost for 2 adults and 3 children?
A
$28
B
$24
C
$30
D
$32
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$28
Step-by-Step Explanation:
(2 × $8) + (3 × $4) = $16 + $12 = $28.
11
Short Answer
Medium
1 Mark
At the Wildlife Zoo Adventure, an organizer buys 2 items costing $12 each. If they pay with a $40 bill, what is the change received?
A
$16
B
$18
C
$13
D
$21
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$16
Step-by-Step Explanation:
Total cost: 2 × $12 = $24. Change: $40 - $24 = $16.
12
Multiple Choice
Easy
1 Mark
Compute: 120 - 45 - 35 =
A
40
B
45
C
50
D
35
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
40
Step-by-Step Explanation:
120 - 45 = 75. 75 - 35 = 40.
13
Multiple Choice
Easy
1 Mark
Find the value of (45 ÷ 5) × 3 =
A
27
B
24
C
30
D
21
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
27
Step-by-Step Explanation:
45 ÷ 5 = 9. 9 × 3 = 27.
14
Multiple Choice
Easy
1 Mark
Calculate: 40 - (2 × 6) =
A
28
B
33
C
23
D
10
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
28
Step-by-Step Explanation:
Multiply first: 2 × 6 = 12. Then subtract from 40.
15
Multiple Choice
Easy
1 Mark
Evaluate the two-step expression: (2 × 12) + 15 =
A
39
B
34
C
44
D
36
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
39
Step-by-Step Explanation:
(2 × 12) = 24. 24 + 15 = 39.
16
Short Answer
Hard
2 Marks
Three siblings (Alex, Ben, and Chloe) saved money together. Alex saved twice as much as Ben. Chloe saved $15, which is $5 less than Ben. How much money did all three save altogether?
A
$75
B
$65
C
$70
D
$80
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$75
Step-by-Step Explanation:
Chloe = $15. Ben saved $5 more than Chloe = $15 + $5 = $20. Alex saved twice as much as Ben = 2 × $20 = $40. Total: $40 + $20 + $15 = $75.
17
Short Answer
Hard
2 Marks
A school bus holds 45 passengers. 128 students and 12 teachers are going on a field trip. What is the minimum number of buses needed to transport everyone?
A
4 buses
B
3 buses
C
5 buses
D
6 buses
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
4 buses
Step-by-Step Explanation:
Total people: 128 + 12 = 140 people. 140 ÷ 45 = 3 with 5 people left over. 4 buses are needed so nobody is left behind.
18
Short Answer
Hard
2 Marks
A fruit vendor sells apples at 3 for $2. If a customer buys 12 apples, how much do they pay?
A
$8
B
$6
C
$10
D
$12
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$8
Step-by-Step Explanation:
12 apples ÷ 3 = 4 groups of three. 4 × $2 = $8.
19
Short Answer
Hard
2 Marks
In solving a multi-step word problem, why is drawing a bar model or diagram helpful before doing calculations?
A
It visually organizes the relationship between known parts and the whole, making it clear which operations (+, -, ×, ÷) to perform
B
It replaces the need to do arithmetic
C
It is required for grading only
D
Because bar models always give the final answer automatically
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
It visually organizes the relationship between known parts and the whole, making it clear which operations (+, -, ×, ÷) to perform
Step-by-Step Explanation:
Bar models make the part-whole and comparison relationships visually obvious.
20
Short Answer
Medium
1 Mark
A problem states: 'A teacher packs 28 books into 3 boxes equally. How many books are left over?' Lina calculates 28 ÷ 3 = 9 R 1, and answers '9 books'. What did Lina answer incorrectly?
A
She stated the quotient (number of books per box) instead of the remainder (books left over = 1)
B
28 cannot be divided by 3
C
The remainder is 2
D
Each box gets 8 books
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
She stated the quotient (number of books per box) instead of the remainder (books left over = 1)
Step-by-Step Explanation:
The question asked for books left over (the remainder), which is 1, not the quotient 9.
21
Short Answer
Medium
1 Mark
Tariq reads: 'Adam has 15 stickers. He has 5 more stickers than Bilal. How many stickers does Bilal have?' Tariq calculates 15 + 5 = 20. Why is Tariq incorrect?
A
Adam has more stickers than Bilal, so Bilal has FEWER: 15 - 5 = 10 stickers
B
Stickers cannot be subtracted
C
The answer should be 15 × 5 = 75
D
Adam and Bilal must have equal stickers
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
Adam has more stickers than Bilal, so Bilal has FEWER: 15 - 5 = 10 stickers
Step-by-Step Explanation:
Because Adam has 5 more than Bilal, Bilal must have 15 - 5 = 10 stickers.
22
Fill in the Blanks
Medium
1 Mark
Maya has $50. She buys 2 shirts at the same price and has $14 left. What is the cost of ONE shirt?
A
$18
B
$16
C
$20
D
$22
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$18
Step-by-Step Explanation:
Money spent: $50 - $14 = $36. Cost of one shirt: $36 ÷ 2 = $18.
23
Fill in the Blanks
Medium
1 Mark
Find the missing quantity: [ ? ] tickets at $5 each cost $48 in total.
A
9
B
10
C
8
D
6
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
9
Step-by-Step Explanation:
Divide total by unit price: $48 ÷ $5 = 9 tickets.
24
Short Answer
Medium
1 Mark
A bookshop had 85 storybooks on Monday. They sold 34 books on Tuesday and 26 books on Wednesday. How many books remain on the shelf?
A
25 books
B
20 books
C
30 books
D
15 books
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
25 books
Step-by-Step Explanation:
85 - (34 + 26) = 85 - 60 = 25 books.
25
Short Answer
Medium
1 Mark
A family travels on a bus. Adult tickets cost $8 each and child tickets cost $4 each. What is the total cost for 2 adults and 3 children?
A
$28
B
$24
C
$30
D
$32
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$28
Step-by-Step Explanation:
(2 × $8) + (3 × $4) = $16 + $12 = $28.
26
Short Answer
Medium
1 Mark
At the Children's Book Fair, an organizer buys 6 items costing $5 each. If they pay with a $50 bill, what is the change received?
A
$20
B
$22
C
$17
D
$25
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$20
Step-by-Step Explanation:
Total cost: 6 × $5 = $30. Change: $50 - $30 = $20.
27
Multiple Choice
Easy
1 Mark
Compute: 120 - 45 - 35 =
A
40
B
45
C
50
D
35
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
40
Step-by-Step Explanation:
120 - 45 = 75. 75 - 35 = 40.
28
Multiple Choice
Easy
1 Mark
Find the value of (45 ÷ 5) × 3 =
A
27
B
24
C
30
D
21
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
27
Step-by-Step Explanation:
45 ÷ 5 = 9. 9 × 3 = 27.
29
Multiple Choice
Easy
1 Mark
Calculate: 50 - (6 × 2) =
A
38
B
43
C
33
D
10
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
38
Step-by-Step Explanation:
Multiply first: 6 × 2 = 12. Then subtract from 50.
30
Multiple Choice
Easy
1 Mark
Evaluate the two-step expression: (6 × 5) + 15 =
A
45
B
40
C
50
D
42
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
45
Step-by-Step Explanation:
(6 × 5) = 30. 30 + 15 = 45.
31
Short Answer
Hard
2 Marks
Three siblings (Alex, Ben, and Chloe) saved money together. Alex saved twice as much as Ben. Chloe saved $15, which is $5 less than Ben. How much money did all three save altogether?
A
$75
B
$65
C
$70
D
$80
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$75
Step-by-Step Explanation:
Chloe = $15. Ben saved $5 more than Chloe = $15 + $5 = $20. Alex saved twice as much as Ben = 2 × $20 = $40. Total: $40 + $20 + $15 = $75.
32
Short Answer
Hard
2 Marks
A school bus holds 45 passengers. 128 students and 12 teachers are going on a field trip. What is the minimum number of buses needed to transport everyone?
A
4 buses
B
3 buses
C
5 buses
D
6 buses
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
4 buses
Step-by-Step Explanation:
Total people: 128 + 12 = 140 people. 140 ÷ 45 = 3 with 5 people left over. 4 buses are needed so nobody is left behind.
33
Short Answer
Hard
2 Marks
A fruit vendor sells apples at 3 for $2. If a customer buys 12 apples, how much do they pay?
A
$8
B
$6
C
$10
D
$12
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$8
Step-by-Step Explanation:
12 apples ÷ 3 = 4 groups of three. 4 × $2 = $8.
34
Short Answer
Hard
2 Marks
In solving a multi-step word problem, why is drawing a bar model or diagram helpful before doing calculations?
A
It visually organizes the relationship between known parts and the whole, making it clear which operations (+, -, ×, ÷) to perform
B
It replaces the need to do arithmetic
C
It is required for grading only
D
Because bar models always give the final answer automatically
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
It visually organizes the relationship between known parts and the whole, making it clear which operations (+, -, ×, ÷) to perform
Step-by-Step Explanation:
Bar models make the part-whole and comparison relationships visually obvious.
35
Short Answer
Medium
1 Mark
A problem states: 'A teacher packs 28 books into 3 boxes equally. How many books are left over?' Lina calculates 28 ÷ 3 = 9 R 1, and answers '9 books'. What did Lina answer incorrectly?
A
She stated the quotient (number of books per box) instead of the remainder (books left over = 1)
B
28 cannot be divided by 3
C
The remainder is 2
D
Each box gets 8 books
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
She stated the quotient (number of books per box) instead of the remainder (books left over = 1)
Step-by-Step Explanation:
The question asked for books left over (the remainder), which is 1, not the quotient 9.
36
Short Answer
Medium
1 Mark
Tariq reads: 'Adam has 15 stickers. He has 5 more stickers than Bilal. How many stickers does Bilal have?' Tariq calculates 15 + 5 = 20. Why is Tariq incorrect?
A
Adam has more stickers than Bilal, so Bilal has FEWER: 15 - 5 = 10 stickers
B
Stickers cannot be subtracted
C
The answer should be 15 × 5 = 75
D
Adam and Bilal must have equal stickers
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
Adam has more stickers than Bilal, so Bilal has FEWER: 15 - 5 = 10 stickers
Step-by-Step Explanation:
Because Adam has 5 more than Bilal, Bilal must have 15 - 5 = 10 stickers.
37
Fill in the Blanks
Medium
1 Mark
Maya has $50. She buys 2 shirts at the same price and has $14 left. What is the cost of ONE shirt?
A
$18
B
$16
C
$20
D
$22
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$18
Step-by-Step Explanation:
Money spent: $50 - $14 = $36. Cost of one shirt: $36 ÷ 2 = $18.
38
Fill in the Blanks
Medium
1 Mark
Find the missing quantity: [ ? ] tickets at $7 each cost $48 in total.
A
6
B
7
C
5
D
6
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
6
Step-by-Step Explanation:
Divide total by unit price: $48 ÷ $7 = 6 tickets.
39
Short Answer
Medium
1 Mark
A bookshop had 85 storybooks on Monday. They sold 34 books on Tuesday and 26 books on Wednesday. How many books remain on the shelf?
A
25 books
B
20 books
C
30 books
D
15 books
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
25 books
Step-by-Step Explanation:
85 - (34 + 26) = 85 - 60 = 25 books.
40
Short Answer
Medium
1 Mark
A family travels on a bus. Adult tickets cost $8 each and child tickets cost $4 each. What is the total cost for 2 adults and 3 children?
A
$28
B
$24
C
$30
D
$32
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$28
Step-by-Step Explanation:
(2 × $8) + (3 × $4) = $16 + $12 = $28.
41
Short Answer
Medium
1 Mark
At the School Sports Carnival, an organizer buys 5 items costing $7 each. If they pay with a $45 bill, what is the change received?
A
$10
B
$12
C
$7
D
$15
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$10
Step-by-Step Explanation:
Total cost: 5 × $7 = $35. Change: $45 - $35 = $10.
42
Multiple Choice
Easy
1 Mark
Compute: 120 - 45 - 35 =
A
40
B
45
C
50
D
35
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
40
Step-by-Step Explanation:
120 - 45 = 75. 75 - 35 = 40.
43
Multiple Choice
Easy
1 Mark
Find the value of (45 ÷ 5) × 3 =
A
27
B
24
C
30
D
21
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
27
Step-by-Step Explanation:
45 ÷ 5 = 9. 9 × 3 = 27.
44
Multiple Choice
Easy
1 Mark
Calculate: 45 - (5 × 3) =
A
30
B
35
C
25
D
10
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
30
Step-by-Step Explanation:
Multiply first: 5 × 3 = 15. Then subtract from 45.
45
Multiple Choice
Easy
1 Mark
Evaluate the two-step expression: (5 × 7) + 15 =
A
50
B
45
C
55
D
47
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
50
Step-by-Step Explanation:
(5 × 7) = 35. 35 + 15 = 50.
46
Short Answer
Hard
2 Marks
Three siblings (Alex, Ben, and Chloe) saved money together. Alex saved twice as much as Ben. Chloe saved $15, which is $5 less than Ben. How much money did all three save altogether?
A
$75
B
$65
C
$70
D
$80
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$75
Step-by-Step Explanation:
Chloe = $15. Ben saved $5 more than Chloe = $15 + $5 = $20. Alex saved twice as much as Ben = 2 × $20 = $40. Total: $40 + $20 + $15 = $75.
47
Short Answer
Hard
2 Marks
A school bus holds 45 passengers. 128 students and 12 teachers are going on a field trip. What is the minimum number of buses needed to transport everyone?
A
4 buses
B
3 buses
C
5 buses
D
6 buses
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
4 buses
Step-by-Step Explanation:
Total people: 128 + 12 = 140 people. 140 ÷ 45 = 3 with 5 people left over. 4 buses are needed so nobody is left behind.
48
Short Answer
Hard
2 Marks
A fruit vendor sells apples at 3 for $2. If a customer buys 12 apples, how much do they pay?
A
$8
B
$6
C
$10
D
$12
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
$8
Step-by-Step Explanation:
12 apples ÷ 3 = 4 groups of three. 4 × $2 = $8.
49
Short Answer
Hard
2 Marks
In solving a multi-step word problem, why is drawing a bar model or diagram helpful before doing calculations?
A
It visually organizes the relationship between known parts and the whole, making it clear which operations (+, -, ×, ÷) to perform
B
It replaces the need to do arithmetic
C
It is required for grading only
D
Because bar models always give the final answer automatically
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
It visually organizes the relationship between known parts and the whole, making it clear which operations (+, -, ×, ÷) to perform
Step-by-Step Explanation:
Bar models make the part-whole and comparison relationships visually obvious.
50
Short Answer
Medium
1 Mark
A problem states: 'A teacher packs 28 books into 3 boxes equally. How many books are left over?' Lina calculates 28 ÷ 3 = 9 R 1, and answers '9 books'. What did Lina answer incorrectly?
A
She stated the quotient (number of books per box) instead of the remainder (books left over = 1)
B
28 cannot be divided by 3
C
The remainder is 2
D
Each box gets 8 books
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
She stated the quotient (number of books per box) instead of the remainder (books left over = 1)
Step-by-Step Explanation:
The question asked for books left over (the remainder), which is 1, not the quotient 9.