MathsAges 7-9

Addition fluency

Add two whole numbers with confidence and verify the total by counting on or partitioning. Review suitability for your learners before teaching.

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Worksheet StudioPractice pack · Ages 7-9

Take your time. Show your thinking.

12 questions · Seed 50 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 7-9

Answers and reasoning. Review before teaching.

1. Calculate 103 + 71.
174
Count on or partition to add 103 and 71: 103 + 71 = 174.
2. Calculate 112 + 160.
272
Count on or partition to add 112 and 160: 112 + 160 = 272.
3. Calculate 81 + 163.
244
Count on or partition to add 81 and 163: 81 + 163 = 244.
4. Calculate 141 + 72.
213
Count on or partition to add 141 and 72: 141 + 72 = 213.
5. Calculate 99 + 124.
223
Count on or partition to add 99 and 124: 99 + 124 = 223.
6. Calculate 207 + 208.
415
Count on or partition to add 207 and 208: 207 + 208 = 415.
7. Calculate 74 + 172.
246
Count on or partition to add 74 and 172: 74 + 172 = 246.
8. Calculate 58 + 120.
178
Count on or partition to add 58 and 120: 58 + 120 = 178.
9. Calculate 53 + 173.
226
Count on or partition to add 53 and 173: 53 + 173 = 226.
10. Calculate 50 + 170.
220
Count on or partition to add 50 and 170: 50 + 170 = 220.
11. Calculate 115 + 202.
317
Count on or partition to add 115 and 202: 115 + 202 = 317.
12. Calculate 150 + 135.
285
Count on or partition to add 150 and 135: 150 + 135 = 285.

12 questions · Seed 50 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 7-9

Take your time. Show your thinking.

12 questions · Seed 50 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 7-9

Answers and reasoning. Review before teaching.

1. Calculate 103 + 71.
174
Count on or partition to add 103 and 71: 103 + 71 = 174.
2. Calculate 112 + 160.
272
Count on or partition to add 112 and 160: 112 + 160 = 272.
3. Calculate 81 + 163.
244
Count on or partition to add 81 and 163: 81 + 163 = 244.
4. Calculate 141 + 72.
213
Count on or partition to add 141 and 72: 141 + 72 = 213.
5. Calculate 99 + 124.
223
Count on or partition to add 99 and 124: 99 + 124 = 223.
6. Calculate 207 + 208.
415
Count on or partition to add 207 and 208: 207 + 208 = 415.
7. Calculate 74 + 172.
246
Count on or partition to add 74 and 172: 74 + 172 = 246.
8. Calculate 58 + 120.
178
Count on or partition to add 58 and 120: 58 + 120 = 178.
9. Calculate 53 + 173.
226
Count on or partition to add 53 and 173: 53 + 173 = 226.
10. Calculate 50 + 170.
220
Count on or partition to add 50 and 170: 50 + 170 = 220.
11. Calculate 115 + 202.
317
Count on or partition to add 115 and 202: 115 + 202 = 317.
12. Calculate 150 + 135.
285
Count on or partition to add 150 and 135: 150 + 135 = 285.

12 questions · Seed 50 · Age guidance, not curriculum certification