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 47 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 7-9

Answers and reasoning. Review before teaching.

1. Calculate 230 + 175.
405
Count on or partition to add 230 and 175: 230 + 175 = 405.
2. Calculate 111 + 60.
171
Count on or partition to add 111 and 60: 111 + 60 = 171.
3. Calculate 188 + 172.
360
Count on or partition to add 188 and 172: 188 + 172 = 360.
4. Calculate 205 + 110.
315
Count on or partition to add 205 and 110: 205 + 110 = 315.
5. Calculate 48 + 173.
221
Count on or partition to add 48 and 173: 48 + 173 = 221.
6. Calculate 78 + 109.
187
Count on or partition to add 78 and 109: 78 + 109 = 187.
7. Calculate 172 + 57.
229
Count on or partition to add 172 and 57: 172 + 57 = 229.
8. Calculate 110 + 96.
206
Count on or partition to add 110 and 96: 110 + 96 = 206.
9. Calculate 136 + 106.
242
Count on or partition to add 136 and 106: 136 + 106 = 242.
10. Calculate 141 + 142.
283
Count on or partition to add 141 and 142: 141 + 142 = 283.
11. Calculate 222 + 134.
356
Count on or partition to add 222 and 134: 222 + 134 = 356.
12. Calculate 172 + 222.
394
Count on or partition to add 172 and 222: 172 + 222 = 394.

12 questions · Seed 47 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 7-9

Take your time. Show your thinking.

12 questions · Seed 47 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 7-9

Answers and reasoning. Review before teaching.

1. Calculate 230 + 175.
405
Count on or partition to add 230 and 175: 230 + 175 = 405.
2. Calculate 111 + 60.
171
Count on or partition to add 111 and 60: 111 + 60 = 171.
3. Calculate 188 + 172.
360
Count on or partition to add 188 and 172: 188 + 172 = 360.
4. Calculate 205 + 110.
315
Count on or partition to add 205 and 110: 205 + 110 = 315.
5. Calculate 48 + 173.
221
Count on or partition to add 48 and 173: 48 + 173 = 221.
6. Calculate 78 + 109.
187
Count on or partition to add 78 and 109: 78 + 109 = 187.
7. Calculate 172 + 57.
229
Count on or partition to add 172 and 57: 172 + 57 = 229.
8. Calculate 110 + 96.
206
Count on or partition to add 110 and 96: 110 + 96 = 206.
9. Calculate 136 + 106.
242
Count on or partition to add 136 and 106: 136 + 106 = 242.
10. Calculate 141 + 142.
283
Count on or partition to add 141 and 142: 141 + 142 = 283.
11. Calculate 222 + 134.
356
Count on or partition to add 222 and 134: 222 + 134 = 356.
12. Calculate 172 + 222.
394
Count on or partition to add 172 and 222: 172 + 222 = 394.

12 questions · Seed 47 · Age guidance, not curriculum certification