Subtraction Within 10 — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Sam has 9 stickers. He gives 4 to a friend. How many stickers does Sam have left?
A) 3
B) 4
C) 5
D) 6
9 - 4 = 5. Sam began with 9 stickers and gave away 4, so 5 stickers stay in his hand.
2. There are 8 birds on a branch. Then 3 fly away. How many birds are still on the branch?
A) 4
B) 5
C) 6
D) 7
8 - 3 = 5. When 3 birds leave the group of 8, 5 birds are still perched on the branch.
3. Mia picks 10 flowers. She puts 6 in a vase. How many flowers does she still hold?
A) 3
B) 4
C) 5
D) 6
10 - 6 = 4. After Mia places 6 of her 10 flowers in the vase, 4 flowers stay in her hand.
4. A box has 7 crayons. Tom takes out 2 crayons. How many crayons are in the box now?
A) 4
B) 5
C) 6
D) 7
7 - 2 = 5. Taking 2 crayons out of the box of 7 leaves 5 crayons inside.
Part B: Fill in the Blank
Write the correct answer on each line.
1. 10 - 2 = 8
10 - 2 = 8. Count back two from ten (9, 8) to see the answer is 8.
2. 9 - 5 = 4
9 - 5 = 4. Since 5 + 4 = 9, we know 9 take away 5 leaves 4.
3. 8 - 7 = 1
8 - 7 = 1. Eight is only one more than seven, so the difference is just 1.
4. 6 - 6 = 0
6 - 6 = 0. When you take the whole group away, nothing is left, so the answer is zero.
5. 7 - 3 = 4
7 - 3 = 4. Count back 3 from 7: 6, 5, 4. The difference is 4.