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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 597 · 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.Check with nines: 55 × 98 = 5390. Correct or wrong? (a) wrong (b) correct
  2. 2.10% of 890 =
  3. 3.106 + 18 =
  4. 4.Check with nines: 32 × 40 = 1280. Correct or wrong? (a) wrong (b) correct
  5. 5.11 × 15 =
  6. 6.46 + 52 + 27 + 14 =
  7. 7.195 + 67 =
  8. 8.₹74.65 + ₹42.25 =
  9. 9.286 + 49 =
  10. 10.41² =
  11. 11.42 + 11 + 85 + 61 =
  12. 12.₹91.45 − ₹12.85 =
  13. 13.16 × 19 =
  14. 14.Best estimate of 197 × 8? (a) 3200 (b) 16000 (c) 1600 (d) 160
  15. 15.7 + 7 + 8 + 3 =
  16. 16.830 ÷ 5 =
  17. 17.7 + 5 + 1 + 3 =
  18. 18.58 × 15 =
  19. 19.11 × 15 =
  20. 20.13 × 5 =
  21. 21.₹59.95 + ₹9.90 =
  22. 22.49² =
  23. 23.17 × 15 =
  24. 24.Check with nines: 729 + 688 = 1417. Correct or wrong? (a) correct (b) wrong
  25. 25.₹46.20 − ₹30.50 =
  26. 26.60 × 15 =
  27. 27.438 − 18 =
  28. 28.73 × 50 =
  29. 29.₹87.25 + ₹10.15 =
  30. 30.98 × 50 =
  31. 31.50% of 150 =
  32. 32.344 + 17 =
  33. 33.50% of 60 =
  34. 34.14 × 5 =
  35. 35.945 ÷ 5 =
  36. 36.57 × 50 =
  37. 37.18 × 15 =
  38. 38.19 × 19 =
  39. 39.91² =
  40. 40.87 + 40 + 62 + 88 =

Answer key

  1. correct
  2. 89
  3. 124
  4. correct
  5. 165
  6. 139
  7. 262
  8. 116.9
  9. 335
  10. 1681
  11. 199
  12. 78.6
  13. 304
  14. 1600
  15. 25
  16. 166
  17. 16
  18. 870
  19. 165
  20. 65
  21. 69.85
  22. 2401
  23. 255
  24. correct
  25. 15.7
  26. 900
  27. 420
  28. 3650
  29. 97.4
  30. 4900
  31. 75
  32. 361
  33. 30
  34. 70
  35. 189
  36. 2850
  37. 270
  38. 361
  39. 8281
  40. 277

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