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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 173 · 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 91 × 22? (a) 180 (b) 3600 (c) 18000 (d) 1800
  2. 2.22 + 34 + 57 + 17 =
  3. 3.112 + 29 =
  4. 4.5 + 2 + 2 + 5 =
  5. 5.Check with nines: 93 × 32 = 2972. Correct or wrong? (a) wrong (b) correct
  6. 6.40 × 15 =
  7. 7.60 + 78 + 27 + 45 =
  8. 8.10% of 270 =
  9. 9.51 × 15 =
  10. 10.35 × 15 =
  11. 11.6 + 4 + 6 + 8 + 6 =
  12. 12.99 − 19 =
  13. 13.12 × 12 =
  14. 14.4 + 4 + 3 + 6 =
  15. 15.Best estimate of 68 × 38? (a) 2800 (b) 280 (c) 28000 (d) 5600
  16. 16.₹18.80 + ₹31.35 =
  17. 17.495 + 88 =
  18. 18.50% of 430 =
  19. 19.46 × 8 =
  20. 20.545 ÷ 5 =
  21. 21.76 × 5 =
  22. 22.33 × 4 =
  23. 23.500 ÷ 50 =
  24. 24.69² =
  25. 25.110 − 76 =
  26. 26.31² =
  27. 27.Check with nines: 325 + 915 = 1240. Correct or wrong? (a) correct (b) wrong
  28. 28.458 + 89 =
  29. 29.19² =
  30. 30.128 × 4 =
  31. 31.41 × 15 =
  32. 32.5% of 140 =
  33. 33.25 + 49 + 62 + 39 =
  34. 34.425 ÷ 25 =
  35. 35.13 + 25 + 45 + 70 =
  36. 36.155 − 39 =
  37. 37.850 ÷ 25 =
  38. 38.12 × 16 =
  39. 39.423 + 38 =
  40. 40.22 × 4 =

Answer key

  1. 1800
  2. 130
  3. 141
  4. 14
  5. wrong
  6. 600
  7. 210
  8. 27
  9. 765
  10. 525
  11. 30
  12. 80
  13. 144
  14. 17
  15. 2800
  16. 50.15
  17. 583
  18. 215
  19. 368
  20. 109
  21. 380
  22. 132
  23. 10
  24. 4761
  25. 34
  26. 961
  27. correct
  28. 547
  29. 361
  30. 512
  31. 615
  32. 7
  33. 175
  34. 17
  35. 153
  36. 116
  37. 34
  38. 192
  39. 461
  40. 88

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