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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 578 · 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. 1.62 + 69 + 23 + 30 =
  2. 2.5% of 300 =
  3. 3.51 × 50 =
  4. 4.21 + 22 + 31 + 46 =
  5. 5.3 + 7 + 9 + 6 + 8 =
  6. 6.395 ÷ 5 =
  7. 7.136 − 99 =
  8. 8.51 × 15 =
  9. 9.Best estimate of 102 × 3? (a) 30 (b) 300 (c) 600 (d) 3000
  10. 10.17 × 17 =
  11. 11.55 × 50 =
  12. 12.404 − 89 =
  13. 13.28 + 99 =
  14. 14.6 + 8 + 4 + 6 =
  15. 15.448 − 36 =
  16. 16.1200 ÷ 50 =
  17. 17.38 × 5 =
  18. 18.71 + 33 + 19 + 79 =
  19. 19.34 × 5 =
  20. 20.2 + 8 + 6 + 4 =
  21. 21.13 + 84 + 28 + 76 =
  22. 22.373 − 96 =
  23. 23.132 + 17 =
  24. 24.10% of 790 =
  25. 25.49² =
  26. 26.37 × 5 =
  27. 27.101 + 67 =
  28. 28.Check with nines: 26 × 82 = 2124. Correct or wrong? (a) wrong (b) correct
  29. 29.12 + 34 + 17 + 19 =
  30. 30.9 + 5 + 1 + 6 =
  31. 31.19 × 18 =
  32. 32.89² =
  33. 33.Best estimate of 903 × 8? (a) 72000 (b) 720 (c) 7200 (d) 14400
  34. 34.115 − 68 =
  35. 35.Best estimate of 797 × 9? (a) 72000 (b) 14400 (c) 720 (d) 7200
  36. 36.15 × 15 =
  37. 37.10% of 420 =
  38. 38.158 − 86 =
  39. 39.715 ÷ 5 =
  40. 40.12 × 16 =

Answer key

  1. 184
  2. 15
  3. 2550
  4. 120
  5. 33
  6. 79
  7. 37
  8. 765
  9. 300
  10. 289
  11. 2750
  12. 315
  13. 127
  14. 24
  15. 412
  16. 24
  17. 190
  18. 202
  19. 170
  20. 20
  21. 201
  22. 277
  23. 149
  24. 79
  25. 2401
  26. 185
  27. 168
  28. wrong
  29. 82
  30. 21
  31. 342
  32. 7921
  33. 7200
  34. 47
  35. 7200
  36. 225
  37. 42
  38. 72
  39. 143
  40. 192

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