Lesson 5.1: Addition up to 10: Combining Groups and Plus Sentences
Combine sets, write addition sentences, and add zero.
⏱️ Reading Time: 15 mins
• ❓ 50 Interactive Practice Questions
#AdditionUpTo10 #CombiningGroups #PlusSign
Addition up to 10: Combining Groups & Plus Sentences
Addition means putting groups together to find the total sum. The plus sign (+) means 'add' and the equals sign (=) tells us the result.
3
+
2
=
5
Combining Groups: 3 Green + 2 Blue = 5 Total!
1. Combining Groups by Counting All
If you have 3 juicy green apples and your friend gives you 2 sweet red apples, you put them in one basket and count all together: 1, 2, 3, 4, 5! We write this as 3 + 2 = 5.
Formula: Part + Part = Whole (3 + 2 = 5).
2. Adding Zero (0)
Zero means 'nothing'. When you add 0 to any number, the number stays exactly the same: 7 + 0 = 7, 4 + 0 = 4.
Zero Property: Any number + 0 = The same number!
💡 Key Learning Takeaways
- Addition (+) means putting groups together.
- Count all objects to find the total sum.
- Adding 0 does not change the number.
🎯 Key Learning Takeaways
Master single-digit addition sums up to 10.
📄 Printable Worksheets (10 Available)
Download ready-to-print PDFs for offline student practice with separate parent/teacher answer keys.
WL-G1-C05-W10
A4 • 15 Qs
Addition up to 10 — Worksheet 10
Curriculum Excellence & Final Review
WL-G1-C05-W09
A4 • 15 Qs
Addition up to 10 — Worksheet 9
Mastery Assessment & Progress Check
WL-G1-C05-W08
A4 • 15 Qs
Addition up to 10 — Worksheet 8
Mixed Review & Reinforcement
WL-G1-C05-W07
A4 • 15 Qs
Addition up to 10 — Worksheet 7
Everyday Applications & Story Maths
WL-G1-C05-W06
A4 • 15 Qs
Addition up to 10 — Worksheet 6
Critical Thinking & Deep Understanding
WL-G1-C05-W05
A4 • 15 Qs
Addition up to 10 — Worksheet 5
Speed Challenge & Quick Check
WL-G1-C05-W04
A4 • 15 Qs
Addition up to 10 — Worksheet 4
Problem Solving & Real-Life Stories
WL-G1-C05-W03
A4 • 15 Qs
Addition up to 10 — Worksheet 3
Hands-on Visual Activity & Matching
WL-G1-C05-W02
A4 • 15 Qs
Addition up to 10 — Worksheet 2
Essential Practice & Skill Builder
WL-G1-C05-W01
A4 • 15 Qs
Addition up to 10 — Worksheet 1
Foundational Concepts & Visual Exploration
✍️ Lesson Practice Questions (50 Questions)
Solve these real-world challenges online, test your understanding, and reveal instant step-by-step explanations.
1
Multiple Choice
Hard
1 Mark
Farmer Dan has 8 sheep. Farmer Ben has 5 sheep. How many sheep must Dan give to Ben so they have different counts by 1?
A
All of them
B
Calculate difference
C
None
D
1 sheep
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
1 sheep
Step-by-Step Explanation:
Adjusting by 1 changes the relative difference by 2.
2
Multiple Choice
Hard
1 Mark
I am a mystery number. If you add 5 to me, you get 13. Then if you subtract 2, what do you get?
A
10
B
8
C
5
D
6
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
6
Step-by-Step Explanation:
The mystery number is 8. Subtracting 2 gives 6.
3
Multiple Choice
Hard
1 Mark
If 8 + 5 = 13, what is 5 + 8?
A
13
B
5
C
14
D
8
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
13
Step-by-Step Explanation:
Addition is commutative: changing the order of addends does not change the sum.
4
Multiple Choice
Hard
1 Mark
Why is 13 greater than 8?
A
Because it ends with an odd digit
B
Because adding 5 positive items increases the total amount
C
Because subtraction makes numbers bigger
D
Because order doesn't matter
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
Because adding 5 positive items increases the total amount
Step-by-Step Explanation:
Adding any non-zero positive number produces a larger total.
5
Multiple Choice
Medium
1 Mark
Sam claims: 'Taking away 5 from 13 gives 18.' What did Sam do wrong?
A
He forgot the tens
B
He added instead of subtracting
C
He counted backward
D
He divided the numbers
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
He added instead of subtracting
Step-by-Step Explanation:
Taking away means subtraction, but Sam performed addition.
6
Multiple Choice
Medium
1 Mark
A student said that 8 + 5 equals 23 because 'we always put 1 in front'. What mistake did the student make?
A
The addition is correct
B
They confused adding numbers with writing digits side by side
C
They subtracted instead
D
They forgot the decimal
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
They confused adding numbers with writing digits side by side
Step-by-Step Explanation:
Place values must be added together, not concatenated blindly.
7
Multiple Choice
Medium
1 Mark
What number completes the pattern: 8, 10, 12, [ ? ]?
A
13
B
16
C
15
D
14
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
14
Step-by-Step Explanation:
The pattern adds 2 each time. 12 + 2 = 14.
8
Multiple Choice
Medium
1 Mark
Find the missing number: 8 + [ ? ] = 13.
A
4
B
8
C
5
D
6
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
5
Step-by-Step Explanation:
Missing number is 5 because 8 + 5 = 13.
9
Multiple Choice
Medium
1 Mark
In a garden, there are 8 red butterflies and 5 blue butterflies. How many butterflies are fluttering together?
A
5 butterflies
B
8 butterflies
C
13 butterflies
D
16 butterflies
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
13 butterflies
Step-by-Step Explanation:
8 + 5 = 13 butterflies.
10
Multiple Choice
Medium
1 Mark
A school library table had 13 storybooks. Students checked out 5 books. How many books remain on the table?
A
5 books
B
9 books
C
7 books
D
8 books
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
8 books
Step-by-Step Explanation:
(13) - 5 = 8 books remain.
11
Multiple Choice
Medium
1 Mark
A baker made 8 blueberry muffins in the morning and 5 chocolate muffins in the afternoon. How many muffins did he bake in all?
A
12 muffins
B
8 muffins
C
15 muffins
D
13 muffins
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
13 muffins
Step-by-Step Explanation:
8 + 5 = 13 muffins baked.
12
Multiple Choice
Easy
1 Mark
What is the result of taking away 5 from 13?
A
7
B
8
C
9
D
5
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
8
Step-by-Step Explanation:
(13) - 5 = 8.
13
Multiple Choice
Easy
1 Mark
Compare the quantities: 13 [ ? ] 10.
A
>
B
≈
C
=
D
<
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
>
Step-by-Step Explanation:
13 is greater than 10.
14
Multiple Choice
Easy
1 Mark
Which number is 1 more than 13?
A
15
B
13
C
12
D
14
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
14
Step-by-Step Explanation:
Adding 1 gives 14.
15
Multiple Choice
Easy
1 Mark
In Chapter 'Addition up to 10', what is 8 + 5?
A
14
B
13
C
12
D
15
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
13
Step-by-Step Explanation:
8 + 5 = 13.
16
Multiple Choice
Hard
1 Mark
Farmer Dan has 7 sheep. Farmer Ben has 2 sheep. How many sheep must Dan give to Ben so they have different counts by 1?
A
1 sheep
B
None
C
All of them
D
Calculate difference
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
1 sheep
Step-by-Step Explanation:
Adjusting by 1 changes the relative difference by 2.
17
Multiple Choice
Hard
1 Mark
I am a mystery number. If you add 2 to me, you get 9. Then if you subtract 2, what do you get?
A
7
B
9
C
2
D
5
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
5
Step-by-Step Explanation:
The mystery number is 7. Subtracting 2 gives 5.
18
Multiple Choice
Hard
1 Mark
If 7 + 2 = 9, what is 2 + 7?
A
2
B
7
C
10
D
9
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
9
Step-by-Step Explanation:
Addition is commutative: changing the order of addends does not change the sum.
19
Multiple Choice
Hard
1 Mark
Why is 9 greater than 7?
A
Because it ends with an odd digit
B
Because subtraction makes numbers bigger
C
Because order doesn't matter
D
Because adding 2 positive items increases the total amount
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
Because adding 2 positive items increases the total amount
Step-by-Step Explanation:
Adding any non-zero positive number produces a larger total.
20
Multiple Choice
Medium
1 Mark
Sam claims: 'Taking away 2 from 9 gives 11.' What did Sam do wrong?
A
He added instead of subtracting
B
He divided the numbers
C
He forgot the tens
D
He counted backward
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
He added instead of subtracting
Step-by-Step Explanation:
Taking away means subtraction, but Sam performed addition.
21
Multiple Choice
Medium
1 Mark
A student said that 7 + 2 equals 19 because 'we always put 1 in front'. What mistake did the student make?
A
They forgot the decimal
B
They confused adding numbers with writing digits side by side
C
The addition is correct
D
They subtracted instead
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
They confused adding numbers with writing digits side by side
Step-by-Step Explanation:
Place values must be added together, not concatenated blindly.
22
Multiple Choice
Medium
1 Mark
What number completes the pattern: 7, 9, 11, [ ? ]?
A
14
B
15
C
13
D
12
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
13
Step-by-Step Explanation:
The pattern adds 2 each time. 11 + 2 = 13.
23
Multiple Choice
Medium
1 Mark
Find the missing number: 7 + [ ? ] = 9.
A
3
B
7
C
1
D
2
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
2
Step-by-Step Explanation:
Missing number is 2 because 7 + 2 = 9.
24
Multiple Choice
Medium
1 Mark
In a garden, there are 7 red butterflies and 2 blue butterflies. How many butterflies are fluttering together?
A
12 butterflies
B
2 butterflies
C
9 butterflies
D
7 butterflies
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
9 butterflies
Step-by-Step Explanation:
7 + 2 = 9 butterflies.
25
Multiple Choice
Medium
1 Mark
A school library table had 9 storybooks. Students checked out 2 books. How many books remain on the table?
A
7 books
B
6 books
C
2 books
D
8 books
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
7 books
Step-by-Step Explanation:
(9) - 2 = 7 books remain.
26
Multiple Choice
Medium
1 Mark
A baker made 7 blueberry muffins in the morning and 2 chocolate muffins in the afternoon. How many muffins did he bake in all?
A
9 muffins
B
11 muffins
C
7 muffins
D
8 muffins
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
9 muffins
Step-by-Step Explanation:
7 + 2 = 9 muffins baked.
27
Multiple Choice
Easy
1 Mark
What is the result of taking away 2 from 9?
A
7
B
2
C
6
D
8
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
7
Step-by-Step Explanation:
(9) - 2 = 7.
28
Multiple Choice
Easy
1 Mark
Compare the quantities: 12 [ ? ] 9.
A
≈
B
=
C
>
D
<
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
>
Step-by-Step Explanation:
12 is greater than 9.
29
Multiple Choice
Easy
1 Mark
Which number is 1 more than 9?
A
10
B
8
C
9
D
11
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
10
Step-by-Step Explanation:
Adding 1 gives 10.
30
Multiple Choice
Easy
1 Mark
In Chapter 'Addition up to 10', what is 7 + 2?
A
8
B
10
C
9
D
11
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
9
Step-by-Step Explanation:
7 + 2 = 9.
31
Multiple Choice
Hard
1 Mark
Farmer Dan has 6 sheep. Farmer Ben has 7 sheep. How many sheep must Dan give to Ben so they have different counts by 1?
A
None
B
1 sheep
C
All of them
D
Calculate difference
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
1 sheep
Step-by-Step Explanation:
Adjusting by 1 changes the relative difference by 2.
32
Multiple Choice
Hard
1 Mark
I am a mystery number. If you add 7 to me, you get 13. Then if you subtract 2, what do you get?
A
4
B
8
C
6
D
7
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
4
Step-by-Step Explanation:
The mystery number is 6. Subtracting 2 gives 4.
33
Multiple Choice
Hard
1 Mark
If 6 + 7 = 13, what is 7 + 6?
A
14
B
6
C
7
D
13
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
13
Step-by-Step Explanation:
Addition is commutative: changing the order of addends does not change the sum.
34
Multiple Choice
Hard
1 Mark
Why is 13 greater than 6?
A
Because order doesn't matter
B
Because adding 7 positive items increases the total amount
C
Because subtraction makes numbers bigger
D
Because it ends with an odd digit
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
Because adding 7 positive items increases the total amount
Step-by-Step Explanation:
Adding any non-zero positive number produces a larger total.
35
Multiple Choice
Medium
1 Mark
Sam claims: 'Taking away 7 from 13 gives 20.' What did Sam do wrong?
A
He divided the numbers
B
He counted backward
C
He forgot the tens
D
He added instead of subtracting
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
He added instead of subtracting
Step-by-Step Explanation:
Taking away means subtraction, but Sam performed addition.
36
Multiple Choice
Medium
1 Mark
A student said that 6 + 7 equals 23 because 'we always put 1 in front'. What mistake did the student make?
A
They forgot the decimal
B
The addition is correct
C
They confused adding numbers with writing digits side by side
D
They subtracted instead
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
They confused adding numbers with writing digits side by side
Step-by-Step Explanation:
Place values must be added together, not concatenated blindly.
37
Multiple Choice
Medium
1 Mark
What number completes the pattern: 6, 8, 10, [ ? ]?
A
14
B
12
C
13
D
11
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
12
Step-by-Step Explanation:
The pattern adds 2 each time. 10 + 2 = 12.
38
Multiple Choice
Medium
1 Mark
Find the missing number: 6 + [ ? ] = 13.
A
8
B
7
C
6
D
6
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
7
Step-by-Step Explanation:
Missing number is 7 because 6 + 7 = 13.
39
Multiple Choice
Medium
1 Mark
In a garden, there are 6 red butterflies and 7 blue butterflies. How many butterflies are fluttering together?
A
7 butterflies
B
13 butterflies
C
6 butterflies
D
16 butterflies
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
13 butterflies
Step-by-Step Explanation:
6 + 7 = 13 butterflies.
40
Multiple Choice
Medium
1 Mark
A school library table had 13 storybooks. Students checked out 7 books. How many books remain on the table?
A
6 books
B
5 books
C
7 books
D
7 books
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
6 books
Step-by-Step Explanation:
(13) - 7 = 6 books remain.
41
Multiple Choice
Medium
1 Mark
A baker made 6 blueberry muffins in the morning and 7 chocolate muffins in the afternoon. How many muffins did he bake in all?
A
15 muffins
B
6 muffins
C
12 muffins
D
13 muffins
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
13 muffins
Step-by-Step Explanation:
6 + 7 = 13 muffins baked.
42
Multiple Choice
Easy
1 Mark
What is the result of taking away 7 from 13?
A
7
B
5
C
7
D
6
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
6
Step-by-Step Explanation:
(13) - 7 = 6.
43
Multiple Choice
Easy
1 Mark
Compare the quantities: 11 [ ? ] 8.
A
≈
B
<
C
>
D
=
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
>
Step-by-Step Explanation:
11 is greater than 8.
44
Multiple Choice
Easy
1 Mark
Which number is 1 more than 13?
A
15
B
13
C
12
D
14
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
14
Step-by-Step Explanation:
Adding 1 gives 14.
45
Multiple Choice
Easy
1 Mark
In Chapter 'Addition up to 10', what is 6 + 7?
A
15
B
14
C
13
D
12
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
13
Step-by-Step Explanation:
6 + 7 = 13.
46
Multiple Choice
Hard
1 Mark
Farmer Dan has 5 sheep. Farmer Ben has 4 sheep. How many sheep must Dan give to Ben so they have different counts by 1?
A
Calculate difference
B
None
C
All of them
D
1 sheep
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
1 sheep
Step-by-Step Explanation:
Adjusting by 1 changes the relative difference by 2.
47
Multiple Choice
Hard
1 Mark
I am a mystery number. If you add 4 to me, you get 9. Then if you subtract 2, what do you get?
A
7
B
5
C
3
D
4
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
3
Step-by-Step Explanation:
The mystery number is 5. Subtracting 2 gives 3.
48
Multiple Choice
Hard
1 Mark
If 5 + 4 = 9, what is 4 + 5?
A
10
B
4
C
9
D
5
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
9
Step-by-Step Explanation:
Addition is commutative: changing the order of addends does not change the sum.
49
Multiple Choice
Hard
1 Mark
Why is 9 greater than 5?
A
Because order doesn't matter
B
Because subtraction makes numbers bigger
C
Because adding 4 positive items increases the total amount
D
Because it ends with an odd digit
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
Because adding 4 positive items increases the total amount
Step-by-Step Explanation:
Adding any non-zero positive number produces a larger total.
50
Multiple Choice
Medium
1 Mark
Sam claims: 'Taking away 4 from 9 gives 13.' What did Sam do wrong?
A
He divided the numbers
B
He counted backward
C
He forgot the tens
D
He added instead of subtracting
💡 Click to View Correct Answer & Explanation ▼
Correct Answer:
He added instead of subtracting
Step-by-Step Explanation:
Taking away means subtraction, but Sam performed addition.