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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 566 · 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 62 × 38? (a) 4800 (b) 240 (c) 2400 (d) 24000
  2. 2.37 + 72 + 60 + 20 =
  3. 3.1 + 4 + 5 + 6 + 3 =
  4. 4.35 × 4 =
  5. 5.38 × 15 =
  6. 6.16 × 13 =
  7. 7.₹37.35 + ₹18.95 =
  8. 8.425 + 58 =
  9. 9.11 × 13 =
  10. 10.32 × 15 =
  11. 11.750 ÷ 50 =
  12. 12.465 − 18 =
  13. 13.49 × 5 =
  14. 14.82 − 77 =
  15. 15.Check with nines: 21 × 59 = 1245. Correct or wrong? (a) correct (b) wrong
  16. 16.₹90.30 − ₹46.30 =
  17. 17.449 − 77 =
  18. 18.196 + 89 =
  19. 19.182 − 88 =
  20. 20.41² =
  21. 21.10% of 240 =
  22. 22.₹55.80 − ₹44.25 =
  23. 23.53 × 8 =
  24. 24.20 × 4 =
  25. 25.141 − 96 =
  26. 26.₹21.60 + ₹12.10 =
  27. 27.334 + 67 =
  28. 28.147 + 19 =
  29. 29.27 × 5 =
  30. 30.5% of 760 =
  31. 31.110 ÷ 5 =
  32. 32.1325 ÷ 25 =
  33. 33.1550 ÷ 50 =
  34. 34.17 × 17 =
  35. 35.115 × 4 =
  36. 36.26 × 15 =
  37. 37.7 + 1 + 1 + 3 =
  38. 38.107 + 79 =
  39. 39.464 − 77 =
  40. 40.71 × 4 =

Answer key

  1. 2400
  2. 189
  3. 19
  4. 140
  5. 570
  6. 208
  7. 56.3
  8. 483
  9. 143
  10. 480
  11. 15
  12. 447
  13. 245
  14. 5
  15. wrong
  16. 44
  17. 372
  18. 285
  19. 94
  20. 1681
  21. 24
  22. 11.55
  23. 424
  24. 80
  25. 45
  26. 33.7
  27. 401
  28. 166
  29. 135
  30. 38
  31. 22
  32. 53
  33. 31
  34. 289
  35. 460
  36. 390
  37. 12
  38. 186
  39. 387
  40. 284

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