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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 191 · 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. 1.149 − 28 =
  2. 2.277 + 49 =
  3. 3.7 × 15 =
  4. 4.163 − 98 =
  5. 5.Check with nines: 409 + 381 = 782. Correct or wrong? (a) correct (b) wrong
  6. 6.12 × 11 =
  7. 7.180 + 17 =
  8. 8.₹48.90 − ₹5.60 =
  9. 9.48 × 4 =
  10. 10.61 × 15 =
  11. 11.29² =
  12. 12.30 × 8 =
  13. 13.192 + 99 =
  14. 14.5 + 3 + 7 + 3 + 5 =
  15. 15.14 + 61 + 43 + 38 =
  16. 16.54 × 15 =
  17. 17.25% of 490 =
  18. 18.459 + 38 =
  19. 19.27 × 5 =
  20. 20.785 ÷ 5 =
  21. 21.5% of 450 =
  22. 22.46 + 29 + 31 + 30 =
  23. 23.₹99.25 − ₹6.05 =
  24. 24.1350 ÷ 50 =
  25. 25.1450 ÷ 25 =
  26. 26.87 × 4 =
  27. 27.34 + 15 + 87 + 87 =
  28. 28.251 − 36 =
  29. 29.22 × 15 =
  30. 30.Best estimate of 499 × 8? (a) 40000 (b) 400 (c) 4000 (d) 8000
  31. 31.12 × 13 =
  32. 32.Check with nines: 827 + 715 = 1539. Correct or wrong? (a) wrong (b) correct
  33. 33.20% of 680 =
  34. 34.9 + 1 + 1 + 7 + 6 =
  35. 35.65 × 8 =
  36. 36.12 × 13 =
  37. 37.5% of 680 =
  38. 38.5 + 4 + 7 + 7 + 3 =
  39. 39.78 + 26 + 82 + 69 =
  40. 40.₹34.95 + ₹24.85 =

Answer key

  1. 121
  2. 326
  3. 105
  4. 65
  5. wrong
  6. 132
  7. 197
  8. 43.3
  9. 192
  10. 915
  11. 841
  12. 240
  13. 291
  14. 23
  15. 156
  16. 810
  17. 122.5
  18. 497
  19. 135
  20. 157
  21. 22.5
  22. 136
  23. 93.2
  24. 27
  25. 58
  26. 348
  27. 223
  28. 215
  29. 330
  30. 4000
  31. 156
  32. wrong
  33. 136
  34. 24
  35. 520
  36. 156
  37. 34
  38. 26
  39. 255
  40. 59.8

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