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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 717 · 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. 1.133 − 86 =
  2. 2.860 ÷ 5 =
  3. 3.25% of 280 =
  4. 4.200 ÷ 50 =
  5. 5.₹69.45 − ₹3.80 =
  6. 6.154 − 26 =
  7. 7.2 + 5 + 3 + 5 =
  8. 8.Best estimate of 28 × 19? (a) 1200 (b) 600 (c) 6000 (d) 60
  9. 9.358 − 89 =
  10. 10.287 − 98 =
  11. 11.25% of 90 =
  12. 12.Best estimate of 79 × 28? (a) 4800 (b) 24000 (c) 2400 (d) 240
  13. 13.69² =
  14. 14.Check with nines: 46 × 92 = 4224. Correct or wrong? (a) wrong (b) correct
  15. 15.254 − 16 =
  16. 16.50 × 5 =
  17. 17.29 × 15 =
  18. 18.6 + 4 + 7 + 5 + 4 =
  19. 19.32 × 5 =
  20. 20.89 × 5 =
  21. 21.305 ÷ 5 =
  22. 22.20 × 15 =
  23. 23.41 + 68 + 74 + 36 =
  24. 24.235 ÷ 5 =
  25. 25.1 + 5 + 5 + 9 =
  26. 26.278 + 78 =
  27. 27.46 × 15 =
  28. 28.71² =
  29. 29.10 × 15 =
  30. 30.195 − 77 =
  31. 31.474 − 88 =
  32. 32.Check with nines: 496 + 306 = 794. Correct or wrong? (a) correct (b) wrong
  33. 33.64 + 87 + 84 + 89 =
  34. 34.₹16.05 + ₹12.90 =
  35. 35.22 × 50 =
  36. 36.6 + 4 + 1 + 4 =
  37. 37.18 × 8 =
  38. 38.16 × 18 =
  39. 39.96 × 50 =
  40. 40.176 − 49 =

Answer key

  1. 47
  2. 172
  3. 70
  4. 4
  5. 65.65
  6. 128
  7. 15
  8. 600
  9. 269
  10. 189
  11. 22.5
  12. 2400
  13. 4761
  14. wrong
  15. 238
  16. 250
  17. 435
  18. 26
  19. 160
  20. 445
  21. 61
  22. 300
  23. 219
  24. 47
  25. 20
  26. 356
  27. 690
  28. 5041
  29. 150
  30. 118
  31. 386
  32. wrong
  33. 324
  34. 28.95
  35. 1100
  36. 15
  37. 144
  38. 288
  39. 4800
  40. 127

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