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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 88 · 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. 1.39 + 80 + 77 + 28 =
  2. 2.29² =
  3. 3.5 + 8 + 9 + 2 =
  4. 4.529 − 27 =
  5. 5.2 + 2 + 2 + 2 + 8 =
  6. 6.76 × 4 =
  7. 7.660 ÷ 5 =
  8. 8.7 × 15 =
  9. 9.11 × 19 =
  10. 10.6 + 4 + 5 + 5 + 8 =
  11. 11.68 + 89 =
  12. 12.Best estimate of 62 × 62? (a) 7200 (b) 360 (c) 36000 (d) 3600
  13. 13.15 × 15 =
  14. 14.16 × 18 =
  15. 15.19 + 81 + 30 + 76 =
  16. 16.86 + 47 + 56 + 84 =
  17. 17.16 × 19 =
  18. 18.200 ÷ 25 =
  19. 19.89² =
  20. 20.Check with nines: 96 × 32 = 3077. Correct or wrong? (a) wrong (b) correct
  21. 21.58 × 15 =
  22. 22.₹9.50 + ₹30.90 =
  23. 23.44 × 4 =
  24. 24.30 + 79 =
  25. 25.107 − 66 =
  26. 26.24 + 53 + 52 + 39 =
  27. 27.Check with nines: 17 × 88 = 1496. Correct or wrong? (a) correct (b) wrong
  28. 28.5% of 40 =
  29. 29.17 × 12 =
  30. 30.32 × 15 =
  31. 31.14 × 11 =
  32. 32.14 × 18 =
  33. 33.₹93.85 − ₹30.65 =
  34. 34.126 + 98 =
  35. 35.110 − 18 =
  36. 36.12 × 15 =
  37. 37.2 + 7 + 6 + 4 =
  38. 38.49 × 15 =
  39. 39.62 × 15 =
  40. 40.49 × 15 =

Answer key

  1. 224
  2. 841
  3. 24
  4. 502
  5. 16
  6. 304
  7. 132
  8. 105
  9. 209
  10. 28
  11. 157
  12. 3600
  13. 225
  14. 288
  15. 206
  16. 273
  17. 304
  18. 8
  19. 7921
  20. wrong
  21. 870
  22. 40.4
  23. 176
  24. 109
  25. 41
  26. 168
  27. correct
  28. 2
  29. 204
  30. 480
  31. 154
  32. 252
  33. 63.2
  34. 224
  35. 92
  36. 180
  37. 19
  38. 735
  39. 930
  40. 735

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