Math 3 · Unit 9: More addition and subtraction · Cambridge Primary Maths Stage 3

Questions

1. 1. 178 − 53 = ?

   • 231
   • 135
   • 125
   • 115
   Check

2. 2. 154 − 72 = ?

   • 82
   • 92
   • 122
   • 226
   Check

3. 3. 236 − 84 = ?

   • 162
   • 152
   • 148
   • 252
   Check

4. 4. Two packets have 42 sweets altogether, the same in each. How many in each?

   • 22
   • 21
   • 84
   • 20
   Check

5. 5. Which subtraction needs a hundred exchanged for tens?

   • 337 − 163
   • 345 − 213
   • 188 − 54
   • 257 − 125
   Check

6. 6. Danh works out 419 − 187 = 372. What is the correct answer?

   • 232
   • 242
   • 332
   • 372
   Check

7. 7. A shop gets 364 newspapers. 83 are left at lunchtime. How many were sold?

   • 291
   • 321
   • 281
   • 447
   Check

8. 8. 764 children are in a school. 392 are girls. How many boys?

   • 432
   • 472
   • 372
   • 1156
   Check

9. 9. Kwanza pays $38 for two identical footballs. How much is one?

   • $18
   • $76
   • $19
   • $20
   Check

10. 10. A family drives 354 km. At lunch they have 171 km to go. How far have they gone?

    • 525 km
    • 223 km
    • 173 km
    • 183 km
    Check

11. 11. When you subtract 90 from a 3-digit number, do you always need to exchange a hundred?

    • Yes, always
    • No, only sometimes
    • Never
    Check

12. 12. 267 − 64 = ?

    • 203
    • 331
    • 223
    • 213
    Check

13. 13. Estimate 419 − 187 by rounding to the nearest 10.

    • 410 − 180 = 230
    • 400 − 200 = 200
    • 420 − 180 = 240
    • 420 − 190 = 230
    Check

14. 14. How can you check 437 − 264 = 173?

    • 173 + 264 = 437
    • 437 − 173 = 274
    • 437 + 264
    • 173 − 264
    Check

15. 15. 736 − 283 = ?

    • 547
    • 553
    • 1019
    • 453
    Check