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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 525 · 40 questions
TalentJR

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

NameDateTime takenScore ___ / 40
  1. 1.Best estimate of 298 × 8? (a) 4800 (b) 2400 (c) 240 (d) 24000
  2. 2.59² =
  3. 3.Check with nines: 416 + 340 = 756. Correct or wrong? (a) wrong (b) correct
  4. 4.27 × 50 =
  5. 5.156 + 27 =
  6. 6.14 × 14 =
  7. 7.233 + 67 =
  8. 8.12 × 17 =
  9. 9.1275 ÷ 25 =
  10. 10.66 × 50 =
  11. 11.Best estimate of 62 × 41? (a) 24000 (b) 2400 (c) 4800 (d) 240
  12. 12.36 × 15 =
  13. 13.8 + 9 + 1 + 6 =
  14. 14.529 − 76 =
  15. 15.24 × 8 =
  16. 16.17 × 19 =
  17. 17.25% of 150 =
  18. 18.Best estimate of 32 × 31? (a) 900 (b) 1800 (c) 90 (d) 9000
  19. 19.69² =
  20. 20.₹58.30 + ₹42.20 =
  21. 21.29 + 39 + 16 + 33 =
  22. 22.10% of 130 =
  23. 23.205 + 78 =
  24. 24.469 − 36 =
  25. 25.172 − 76 =
  26. 26.4 + 5 + 2 + 4 + 6 =
  27. 27.234 − 76 =
  28. 28.6 + 6 + 3 + 7 =
  29. 29.405 − 59 =
  30. 30.95 × 50 =
  31. 31.₹87.60 + ₹15.50 =
  32. 32.11 × 15 =
  33. 33.₹47.95 + ₹19.05 =
  34. 34.268 − 26 =
  35. 35.470 − 79 =
  36. 36.13 × 19 =
  37. 37.84 × 50 =
  38. 38.50% of 190 =
  39. 39.27 × 5 =
  40. 40.Best estimate of 81 × 68? (a) 56000 (b) 560 (c) 5600 (d) 11200

Answer key

  1. 2400
  2. 3481
  3. correct
  4. 1350
  5. 183
  6. 196
  7. 300
  8. 204
  9. 51
  10. 3300
  11. 2400
  12. 540
  13. 24
  14. 453
  15. 192
  16. 323
  17. 37.5
  18. 900
  19. 4761
  20. 100.5
  21. 117
  22. 13
  23. 283
  24. 433
  25. 96
  26. 21
  27. 158
  28. 22
  29. 346
  30. 4750
  31. 103.1
  32. 165
  33. 67
  34. 242
  35. 391
  36. 247
  37. 4200
  38. 95
  39. 135
  40. 5600

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