Addition within 10 — Answer Key
Part A: Solve the Addition Problems
Add the numbers. Write the answer on the line.
2
+5
7
3
+6
9
4
+4
8
1
+7
8
5
+5
10
0
+9
9
6
+3
9
7
+2
9
4
+6
10
8
+1
9
3
+7
10
2
+8
10
Part B: Fill in the Missing Number
Write the missing number to complete each number sentence.
1. 4 + 3 = 7
4 + 3 = 7. The missing addend is 4.
2. 5 + 4 = 9
5 + 4 = 9. The missing addend is 4.
3. 4 + 6 = 10
4 + 6 = 10. The missing addend is 4.
4. 2 + 6 = 8
2 + 6 = 8. The missing addend is 6.
5. 4 + 1 = 5
4 + 1 = 5. The missing addend is 4.
6. 7 + 3 = 10
7 + 3 = 10. The missing addend is 3.