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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 289 · 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. 1.57 × 8 =
  2. 2.71 × 5 =
  3. 3.21 × 8 =
  4. 4.Best estimate of 99 × 4? (a) 40 (b) 4000 (c) 400 (d) 800
  5. 5.₹28.20 + ₹42.55 =
  6. 6.₹28.55 + ₹22.15 =
  7. 7.179 − 37 =
  8. 8.79 × 50 =
  9. 9.₹35.80 − ₹14.65 =
  10. 10.258 + 37 =
  11. 11.331 − 97 =
  12. 12.1175 ÷ 25 =
  13. 13.212 + 37 =
  14. 14.174 + 98 =
  15. 15.138 × 4 =
  16. 16.50 × 15 =
  17. 17.159 × 4 =
  18. 18.2 + 1 + 3 + 7 =
  19. 19.21² =
  20. 20.450 ÷ 5 =
  21. 21.Check with nines: 490 + 237 = 726. Correct or wrong? (a) wrong (b) correct
  22. 22.3 + 2 + 8 + 7 + 8 =
  23. 23.495 + 57 =
  24. 24.10% of 490 =
  25. 25.127 × 4 =
  26. 26.4 + 5 + 7 + 3 + 1 =
  27. 27.400 + 48 =
  28. 28.46 + 29 =
  29. 29.8 + 8 + 3 + 8 + 2 =
  30. 30.68 × 50 =
  31. 31.46 × 5 =
  32. 32.473 − 89 =
  33. 33.Best estimate of 21 × 82? (a) 3200 (b) 160 (c) 16000 (d) 1600
  34. 34.20% of 900 =
  35. 35.775 ÷ 25 =
  36. 36.1 + 1 + 9 + 2 + 3 =
  37. 37.Check with nines: 29 × 16 = 466. Correct or wrong? (a) wrong (b) correct
  38. 38.1 + 9 + 5 + 5 + 3 =
  39. 39.1 + 9 + 9 + 3 + 7 =
  40. 40.11 × 18 =

Answer key

  1. 456
  2. 355
  3. 168
  4. 400
  5. 70.75
  6. 50.7
  7. 142
  8. 3950
  9. 21.15
  10. 295
  11. 234
  12. 47
  13. 249
  14. 272
  15. 552
  16. 750
  17. 636
  18. 13
  19. 441
  20. 90
  21. wrong
  22. 28
  23. 552
  24. 49
  25. 508
  26. 20
  27. 448
  28. 75
  29. 29
  30. 3400
  31. 230
  32. 384
  33. 1600
  34. 180
  35. 31
  36. 16
  37. wrong
  38. 23
  39. 29
  40. 198

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