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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 579 · 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. 1.171 − 48 =
  2. 2.39² =
  3. 3.495 + 87 =
  4. 4.60 × 8 =
  5. 5.Best estimate of 58 × 59? (a) 7200 (b) 360 (c) 3600 (d) 36000
  6. 6.Best estimate of 603 × 7? (a) 8400 (b) 4200 (c) 420 (d) 42000
  7. 7.450 ÷ 25 =
  8. 8.₹47.85 + ₹27.60 =
  9. 9.424 + 49 =
  10. 10.23 × 15 =
  11. 11.48 × 15 =
  12. 12.37 × 50 =
  13. 13.25 + 13 + 81 + 73 =
  14. 14.Best estimate of 897 × 4? (a) 36000 (b) 360 (c) 3600 (d) 7200
  15. 15.10% of 620 =
  16. 16.6 + 1 + 4 + 6 + 1 =
  17. 17.25% of 590 =
  18. 18.31² =
  19. 19.375 ÷ 25 =
  20. 20.55 × 50 =
  21. 21.1% of 150 =
  22. 22.₹81.20 + ₹28.55 =
  23. 23.220 − 37 =
  24. 24.73 + 39 + 35 + 11 =
  25. 25.219 − 17 =
  26. 26.129 × 4 =
  27. 27.8 + 1 + 3 + 7 + 9 =
  28. 28.4 + 1 + 6 + 9 =
  29. 29.31² =
  30. 30.17 × 19 =
  31. 31.₹59.40 − ₹6.10 =
  32. 32.65 × 4 =
  33. 33.4 + 6 + 8 + 2 =
  34. 34.31 + 24 + 17 + 43 =
  35. 35.Check with nines: 826 + 709 = 1535. Correct or wrong? (a) correct (b) wrong
  36. 36.11 × 15 =
  37. 37.153 − 38 =
  38. 38.12 × 14 =
  39. 39.225 ÷ 25 =
  40. 40.14 × 14 =

Answer key

  1. 123
  2. 1521
  3. 582
  4. 480
  5. 3600
  6. 4200
  7. 18
  8. 75.45
  9. 473
  10. 345
  11. 720
  12. 1850
  13. 192
  14. 3600
  15. 62
  16. 18
  17. 147.5
  18. 961
  19. 15
  20. 2750
  21. 1.5
  22. 109.75
  23. 183
  24. 158
  25. 202
  26. 516
  27. 28
  28. 20
  29. 961
  30. 323
  31. 53.3
  32. 260
  33. 20
  34. 115
  35. correct
  36. 165
  37. 115
  38. 168
  39. 9
  40. 196

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