1
Multiple Choice
Hard
1 Mark
What is the difference between (71 + 10) and (39 + 10)?
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▼
Correct Answer:
32
Step-by-Step Explanation:
Adding 10 to both numbers does not change their difference: (71 + 10) - (39 + 10) = 71 - 39 = 32.
2
Multiple Choice
Hard
1 Mark
A secret number plus 32 equals 71. If you double the secret number, what is the result?
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▼
Correct Answer:
78
Step-by-Step Explanation:
The secret number is 39. Doubling it gives 39 × 2 = 78.
3
Multiple Choice
Hard
1 Mark
If 39 + 32 = 71, what is 32 + 39?
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▼
Correct Answer:
71
Step-by-Step Explanation:
The order of addends does not affect the sum (commutative property).
4
Multiple Choice
Hard
1 Mark
Why is 71 greater than 39?
A
Numbers ending in 0 are always smaller
B
Because {tot} has a bigger first digit
C
Because 71 includes 39 plus an additional 32 items
D
Because {v1} is an even number
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
Because 71 includes 39 plus an additional 32 items
Step-by-Step Explanation:
Adding a positive quantity always increases the total.
5
Multiple Choice
Medium
1 Mark
Sam evaluated 71 - 32 and wrote 103. What was Sam's mistake?
A
He forgot the units place
B
He divided the numbers
C
He multiplied by 2
D
He added instead of subtracting
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
He added instead of subtracting
Step-by-Step Explanation:
The minus sign means subtraction (taking away), but Sam performed addition.
6
Multiple Choice
Medium
1 Mark
A student claimed that 39 + 32 = 81 because 'we must add 10 to every answer'. Why is this student wrong?
A
The answer is 0
B
Addition is only for 1-digit numbers
C
Addition means combining only the given numbers without adding extra amounts
D
The student subtracted instead
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
Addition means combining only the given numbers without adding extra amounts
Step-by-Step Explanation:
39 + 32 equals exactly 71.
7
Multiple Choice
Medium
1 Mark
Complete the pattern: 39, 44, 49, [ ? ].
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▼
Correct Answer:
54
Step-by-Step Explanation:
The pattern increases by 5. 49 + 5 = 54.
8
Multiple Choice
Medium
1 Mark
Find the missing number: 39 + [ ? ] = 71.
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▼
Correct Answer:
32
Step-by-Step Explanation:
Missing value is 32 because 39 + 32 = 71.
9
Multiple Choice
Medium
1 Mark
In a school garden, there are 39 yellow marigolds and 32 purple petunias. How many flowers are blooming in total?
A
39 flowers
B
71 flowers
C
76 flowers
D
32 flowers
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
71 flowers
Step-by-Step Explanation:
39 + 32 = 71 flowers.
10
Multiple Choice
Medium
1 Mark
A school library received 71 new graphic novels. Students checked out 32 novels on Monday. How many new novels are still on the shelf?
A
71 novels
B
39 novels
C
32 novels
D
40 novels
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
39 novels
Step-by-Step Explanation:
71 - 32 = 39 novels remaining.
11
Multiple Choice
Medium
1 Mark
A baker packed 39 apple pies in the morning and 32 cherry pies in the afternoon. How many pies did the baker pack in all?
A
73 pies
B
39 pies
C
71 pies
D
69 pies
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
71 pies
Step-by-Step Explanation:
39 + 32 = 71 pies in total.
12
Multiple Choice
Easy
1 Mark
What number is 10 more than 39?
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▼
Correct Answer:
49
Step-by-Step Explanation:
39 + 10 = 49.
13
Multiple Choice
Easy
1 Mark
Which comparison is correct: 71 [ ? ] 66?
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▼
Correct Answer:
>
Step-by-Step Explanation:
71 is greater than 66.
14
Multiple Choice
Easy
1 Mark
Calculate: 71 - 32 = ?
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▼
Correct Answer:
39
Step-by-Step Explanation:
71 - 32 = 39.
15
Multiple Choice
Easy
1 Mark
In Chapter 'Division Basics', calculate: 39 + 32 = ?
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
71
Step-by-Step Explanation:
39 + 32 = 71.
16
Multiple Choice
Hard
1 Mark
What is the difference between (61 + 10) and (32 + 10)?
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▼
Correct Answer:
29
Step-by-Step Explanation:
Adding 10 to both numbers does not change their difference: (61 + 10) - (32 + 10) = 61 - 32 = 29.
17
Multiple Choice
Hard
1 Mark
A secret number plus 29 equals 61. If you double the secret number, what is the result?
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▼
Correct Answer:
64
Step-by-Step Explanation:
The secret number is 32. Doubling it gives 32 × 2 = 64.
18
Multiple Choice
Hard
1 Mark
If 32 + 29 = 61, what is 29 + 32?
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▼
Correct Answer:
61
Step-by-Step Explanation:
The order of addends does not affect the sum (commutative property).
19
Multiple Choice
Hard
1 Mark
Why is 61 greater than 32?
A
Because {v1} is an even number
B
Numbers ending in 0 are always smaller
C
Because {tot} has a bigger first digit
D
Because 61 includes 32 plus an additional 29 items
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
Because 61 includes 32 plus an additional 29 items
Step-by-Step Explanation:
Adding a positive quantity always increases the total.
20
Multiple Choice
Medium
1 Mark
Sam evaluated 61 - 29 and wrote 90. What was Sam's mistake?
A
He forgot the units place
B
He divided the numbers
C
He multiplied by 2
D
He added instead of subtracting
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
He added instead of subtracting
Step-by-Step Explanation:
The minus sign means subtraction (taking away), but Sam performed addition.
21
Multiple Choice
Medium
1 Mark
A student claimed that 32 + 29 = 71 because 'we must add 10 to every answer'. Why is this student wrong?
A
The student subtracted instead
B
Addition means combining only the given numbers without adding extra amounts
C
The answer is 0
D
Addition is only for 1-digit numbers
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
Addition means combining only the given numbers without adding extra amounts
Step-by-Step Explanation:
32 + 29 equals exactly 61.
22
Multiple Choice
Medium
1 Mark
Complete the pattern: 32, 37, 42, [ ? ].
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▼
Correct Answer:
47
Step-by-Step Explanation:
The pattern increases by 5. 42 + 5 = 47.
23
Multiple Choice
Medium
1 Mark
Find the missing number: 32 + [ ? ] = 61.
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▼
Correct Answer:
29
Step-by-Step Explanation:
Missing value is 29 because 32 + 29 = 61.
24
Multiple Choice
Medium
1 Mark
In a school garden, there are 32 yellow marigolds and 29 purple petunias. How many flowers are blooming in total?
A
32 flowers
B
66 flowers
C
61 flowers
D
29 flowers
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
61 flowers
Step-by-Step Explanation:
32 + 29 = 61 flowers.
25
Multiple Choice
Medium
1 Mark
A school library received 61 new graphic novels. Students checked out 29 novels on Monday. How many new novels are still on the shelf?
A
61 novels
B
29 novels
C
33 novels
D
32 novels
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
32 novels
Step-by-Step Explanation:
61 - 29 = 32 novels remaining.
26
Multiple Choice
Medium
1 Mark
A baker packed 32 apple pies in the morning and 29 cherry pies in the afternoon. How many pies did the baker pack in all?
A
59 pies
B
63 pies
C
61 pies
D
32 pies
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
61 pies
Step-by-Step Explanation:
32 + 29 = 61 pies in total.
27
Multiple Choice
Easy
1 Mark
What number is 10 more than 32?
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▼
Correct Answer:
42
Step-by-Step Explanation:
32 + 10 = 42.
28
Multiple Choice
Easy
1 Mark
Which comparison is correct: 61 [ ? ] 56?
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▼
Correct Answer:
>
Step-by-Step Explanation:
61 is greater than 56.
29
Multiple Choice
Easy
1 Mark
Calculate: 61 - 29 = ?
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
32
Step-by-Step Explanation:
61 - 29 = 32.
30
Multiple Choice
Easy
1 Mark
In Chapter 'Division Basics', calculate: 32 + 29 = ?
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
61
Step-by-Step Explanation:
32 + 29 = 61.
31
Multiple Choice
Hard
1 Mark
What is the difference between (51 + 10) and (25 + 10)?
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
26
Step-by-Step Explanation:
Adding 10 to both numbers does not change their difference: (51 + 10) - (25 + 10) = 51 - 25 = 26.
32
Multiple Choice
Hard
1 Mark
A secret number plus 26 equals 51. If you double the secret number, what is the result?
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
50
Step-by-Step Explanation:
The secret number is 25. Doubling it gives 25 × 2 = 50.
33
Multiple Choice
Hard
1 Mark
If 25 + 26 = 51, what is 26 + 25?
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
51
Step-by-Step Explanation:
The order of addends does not affect the sum (commutative property).
34
Multiple Choice
Hard
1 Mark
Why is 51 greater than 25?
A
Because 51 includes 25 plus an additional 26 items
B
Numbers ending in 0 are always smaller
C
Because {tot} has a bigger first digit
D
Because {v1} is an even number
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
Because 51 includes 25 plus an additional 26 items
Step-by-Step Explanation:
Adding a positive quantity always increases the total.
35
Multiple Choice
Medium
1 Mark
Sam evaluated 51 - 26 and wrote 77. What was Sam's mistake?
A
He added instead of subtracting
B
He forgot the units place
C
He multiplied by 2
D
He divided the numbers
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
He added instead of subtracting
Step-by-Step Explanation:
The minus sign means subtraction (taking away), but Sam performed addition.
36
Multiple Choice
Medium
1 Mark
A student claimed that 25 + 26 = 61 because 'we must add 10 to every answer'. Why is this student wrong?
A
Addition is only for 1-digit numbers
B
The student subtracted instead
C
Addition means combining only the given numbers without adding extra amounts
D
The answer is 0
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
Addition means combining only the given numbers without adding extra amounts
Step-by-Step Explanation:
25 + 26 equals exactly 51.
37
Multiple Choice
Medium
1 Mark
Complete the pattern: 25, 30, 35, [ ? ].
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▼
Correct Answer:
40
Step-by-Step Explanation:
The pattern increases by 5. 35 + 5 = 40.
38
Multiple Choice
Medium
1 Mark
Find the missing number: 25 + [ ? ] = 51.
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
26
Step-by-Step Explanation:
Missing value is 26 because 25 + 26 = 51.
39
Multiple Choice
Medium
1 Mark
In a school garden, there are 25 yellow marigolds and 26 purple petunias. How many flowers are blooming in total?
A
51 flowers
B
25 flowers
C
26 flowers
D
56 flowers
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
51 flowers
Step-by-Step Explanation:
25 + 26 = 51 flowers.
40
Multiple Choice
Medium
1 Mark
A school library received 51 new graphic novels. Students checked out 26 novels on Monday. How many new novels are still on the shelf?
A
26 novels
B
25 novels
C
26 novels
D
51 novels
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
25 novels
Step-by-Step Explanation:
51 - 26 = 25 novels remaining.
41
Multiple Choice
Medium
1 Mark
A baker packed 25 apple pies in the morning and 26 cherry pies in the afternoon. How many pies did the baker pack in all?
A
53 pies
B
49 pies
C
51 pies
D
25 pies
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
51 pies
Step-by-Step Explanation:
25 + 26 = 51 pies in total.
42
Multiple Choice
Easy
1 Mark
What number is 10 more than 25?
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▼
Correct Answer:
35
Step-by-Step Explanation:
25 + 10 = 35.
43
Multiple Choice
Easy
1 Mark
Which comparison is correct: 51 [ ? ] 46?
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▼
Correct Answer:
>
Step-by-Step Explanation:
51 is greater than 46.
44
Multiple Choice
Easy
1 Mark
Calculate: 51 - 26 = ?
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
25
Step-by-Step Explanation:
51 - 26 = 25.
45
Multiple Choice
Easy
1 Mark
In Chapter 'Division Basics', calculate: 25 + 26 = ?
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
51
Step-by-Step Explanation:
25 + 26 = 51.
46
Multiple Choice
Hard
1 Mark
What is the difference between (41 + 10) and (18 + 10)?
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
23
Step-by-Step Explanation:
Adding 10 to both numbers does not change their difference: (41 + 10) - (18 + 10) = 41 - 18 = 23.
47
Multiple Choice
Hard
1 Mark
A secret number plus 23 equals 41. If you double the secret number, what is the result?
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
36
Step-by-Step Explanation:
The secret number is 18. Doubling it gives 18 × 2 = 36.
48
Multiple Choice
Hard
1 Mark
If 18 + 23 = 41, what is 23 + 18?
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▼
Correct Answer:
41
Step-by-Step Explanation:
The order of addends does not affect the sum (commutative property).
49
Multiple Choice
Hard
1 Mark
Why is 41 greater than 18?
A
Numbers ending in 0 are always smaller
B
Because {v1} is an even number
C
Because 41 includes 18 plus an additional 23 items
D
Because {tot} has a bigger first digit
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
Because 41 includes 18 plus an additional 23 items
Step-by-Step Explanation:
Adding a positive quantity always increases the total.
50
Multiple Choice
Medium
1 Mark
Sam evaluated 41 - 23 and wrote 64. What was Sam's mistake?
A
He added instead of subtracting
B
He divided the numbers
C
He forgot the units place
D
He multiplied by 2
💡 Click to View Correct Answer & Explanation
▼
Correct Answer:
He added instead of subtracting
Step-by-Step Explanation:
The minus sign means subtraction (taking away), but Sam performed addition.