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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 62 · 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. 1.410 ÷ 5 =
  2. 2.112 − 78 =
  3. 3.18 × 13 =
  4. 4.45 × 8 =
  5. 5.44 × 5 =
  6. 6.99 × 4 =
  7. 7.765 ÷ 5 =
  8. 8.750 ÷ 25 =
  9. 9.496 − 97 =
  10. 10.4 + 7 + 9 + 6 =
  11. 11.454 − 47 =
  12. 12.15% of 220 =
  13. 13.533 − 87 =
  14. 14.39 × 15 =
  15. 15.820 ÷ 5 =
  16. 16.74 + 47 =
  17. 17.Check with nines: 153 + 915 = 1068. Correct or wrong? (a) correct (b) wrong
  18. 18.89² =
  19. 19.89 + 23 + 39 + 25 =
  20. 20.15 × 11 =
  21. 21.22 × 15 =
  22. 22.25 × 15 =
  23. 23.33 × 50 =
  24. 24.Best estimate of 28 × 38? (a) 2400 (b) 1200 (c) 12000 (d) 120
  25. 25.12 × 15 =
  26. 26.30 × 15 =
  27. 27.36 × 15 =
  28. 28.1 + 9 + 9 + 1 =
  29. 29.70 + 79 + 18 + 72 =
  30. 30.12 × 18 =
  31. 31.350 ÷ 50 =
  32. 32.343 − 96 =
  33. 33.90 × 4 =
  34. 34.12 × 18 =
  35. 35.675 ÷ 25 =
  36. 36.81² =
  37. 37.Best estimate of 32 × 22? (a) 1200 (b) 60 (c) 600 (d) 6000
  38. 38.9 + 1 + 9 + 5 =
  39. 39.81² =
  40. 40.Best estimate of 58 × 38? (a) 240 (b) 4800 (c) 24000 (d) 2400

Answer key

  1. 82
  2. 34
  3. 234
  4. 360
  5. 220
  6. 396
  7. 153
  8. 30
  9. 399
  10. 26
  11. 407
  12. 33
  13. 446
  14. 585
  15. 164
  16. 121
  17. correct
  18. 7921
  19. 176
  20. 165
  21. 330
  22. 375
  23. 1650
  24. 1200
  25. 180
  26. 450
  27. 540
  28. 20
  29. 239
  30. 216
  31. 7
  32. 247
  33. 360
  34. 216
  35. 27
  36. 6561
  37. 600
  38. 24
  39. 6561
  40. 2400

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