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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 237 · 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. 1.62 + 17 =
  2. 2.402 + 68 =
  3. 3.Best estimate of 79 × 48? (a) 8000 (b) 400 (c) 40000 (d) 4000
  4. 4.₹12.20 − ₹11.85 =
  5. 5.33 × 15 =
  6. 6.10% of 650 =
  7. 7.377 + 98 =
  8. 8.39² =
  9. 9.41² =
  10. 10.1 + 5 + 8 + 5 =
  11. 11.13 + 19 + 65 + 26 =
  12. 12.72 − 19 =
  13. 13.Check with nines: 365 + 668 = 1033. Correct or wrong? (a) wrong (b) correct
  14. 14.13 × 16 =
  15. 15.282 + 79 =
  16. 16.19 × 14 =
  17. 17.Best estimate of 58 × 18? (a) 2400 (b) 12000 (c) 1200 (d) 120
  18. 18.15% of 160 =
  19. 19.49² =
  20. 20.19 × 11 =
  21. 21.12 × 8 =
  22. 22.222 − 19 =
  23. 23.104 + 79 =
  24. 24.28 × 15 =
  25. 25.31² =
  26. 26.575 ÷ 25 =
  27. 27.380 + 59 =
  28. 28.85 × 5 =
  29. 29.4 + 8 + 4 + 2 + 6 =
  30. 30.140 + 47 =
  31. 31.11 × 19 =
  32. 32.28 + 30 + 54 + 61 =
  33. 33.551 − 28 =
  34. 34.384 − 67 =
  35. 35.19 × 15 =
  36. 36.1 + 8 + 3 + 7 + 7 =
  37. 37.20% of 440 =
  38. 38.Best estimate of 78 × 51? (a) 4000 (b) 40000 (c) 400 (d) 8000
  39. 39.13 × 18 =
  40. 40.363 + 19 =

Answer key

  1. 79
  2. 470
  3. 4000
  4. 0.35
  5. 495
  6. 65
  7. 475
  8. 1521
  9. 1681
  10. 19
  11. 123
  12. 53
  13. correct
  14. 208
  15. 361
  16. 266
  17. 1200
  18. 24
  19. 2401
  20. 209
  21. 96
  22. 203
  23. 183
  24. 420
  25. 961
  26. 23
  27. 439
  28. 425
  29. 24
  30. 187
  31. 209
  32. 173
  33. 523
  34. 317
  35. 285
  36. 26
  37. 88
  38. 4000
  39. 234
  40. 382

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