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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 664 · 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. 1.38 + 44 + 81 + 14 =
  2. 2.105 + 57 =
  3. 3.1600 ÷ 50 =
  4. 4.25 × 4 =
  5. 5.2 + 2 + 2 + 8 =
  6. 6.51 × 8 =
  7. 7.90 × 4 =
  8. 8.397 − 69 =
  9. 9.8 + 3 + 8 + 2 + 2 =
  10. 10.83 + 67 + 32 + 47 =
  11. 11.63 × 5 =
  12. 12.29 × 15 =
  13. 13.25 × 15 =
  14. 14.368 − 69 =
  15. 15.31² =
  16. 16.126 × 4 =
  17. 17.Check with nines: 60 × 32 = 1924. Correct or wrong? (a) wrong (b) correct
  18. 18.₹34.75 + ₹5.70 =
  19. 19.387 + 97 =
  20. 20.13 × 14 =
  21. 21.54 × 50 =
  22. 22.41² =
  23. 23.26 + 80 + 89 + 69 =
  24. 24.Best estimate of 303 × 4? (a) 2400 (b) 12000 (c) 120 (d) 1200
  25. 25.89² =
  26. 26.9 + 1 + 6 + 6 + 2 =
  27. 27.72 × 8 =
  28. 28.1% of 510 =
  29. 29.29 + 27 + 25 + 27 =
  30. 30.4 + 3 + 6 + 8 + 6 =
  31. 31.120 − 28 =
  32. 32.11 × 12 =
  33. 33.₹32.10 + ₹15.65 =
  34. 34.1200 ÷ 25 =
  35. 35.43 × 50 =
  36. 36.86 × 4 =
  37. 37.86 + 60 + 67 + 18 =
  38. 38.64 × 5 =
  39. 39.₹23.90 + ₹25.40 =
  40. 40.16 + 18 + 36 + 55 =

Answer key

  1. 177
  2. 162
  3. 32
  4. 100
  5. 14
  6. 408
  7. 360
  8. 328
  9. 23
  10. 229
  11. 315
  12. 435
  13. 375
  14. 299
  15. 961
  16. 504
  17. wrong
  18. 40.45
  19. 484
  20. 182
  21. 2700
  22. 1681
  23. 264
  24. 1200
  25. 7921
  26. 24
  27. 576
  28. 5.1
  29. 108
  30. 27
  31. 92
  32. 132
  33. 47.75
  34. 48
  35. 2150
  36. 344
  37. 231
  38. 320
  39. 49.3
  40. 125

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