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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 286 · 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. 1.42 × 15 =
  2. 2.63 × 50 =
  3. 3.59² =
  4. 4.81 + 39 =
  5. 5.10% of 180 =
  6. 6.2 + 7 + 5 + 3 =
  7. 7.70 + 65 + 38 + 80 =
  8. 8.15% of 220 =
  9. 9.Best estimate of 397 × 3? (a) 120 (b) 12000 (c) 2400 (d) 1200
  10. 10.₹45.60 + ₹40.65 =
  11. 11.471 − 59 =
  12. 12.30 × 50 =
  13. 13.Check with nines: 43 × 61 = 2623. Correct or wrong? (a) correct (b) wrong
  14. 14.143 + 68 =
  15. 15.360 + 19 =
  16. 16.5 + 2 + 8 + 3 =
  17. 17.20% of 410 =
  18. 18.₹71.85 + ₹24.90 =
  19. 19.15 + 14 + 89 + 76 =
  20. 20.Check with nines: 26 × 39 = 1014. Correct or wrong? (a) wrong (b) correct
  21. 21.16 × 4 =
  22. 22.15 × 18 =
  23. 23.77 × 5 =
  24. 24.7 + 5 + 3 + 7 =
  25. 25.4 + 6 + 2 + 2 + 1 =
  26. 26.323 + 37 =
  27. 27.179 + 57 =
  28. 28.356 − 28 =
  29. 29.74 + 28 =
  30. 30.50% of 660 =
  31. 31.250 + 79 =
  32. 32.295 − 27 =
  33. 33.46 + 74 + 65 + 64 =
  34. 34.8 × 15 =
  35. 35.12 × 16 =
  36. 36.28 + 49 + 86 + 35 =
  37. 37.Best estimate of 699 × 3? (a) 210 (b) 2100 (c) 21000 (d) 4200
  38. 38.1075 ÷ 25 =
  39. 39.349 − 19 =
  40. 40.2 + 1 + 5 + 8 =

Answer key

  1. 630
  2. 3150
  3. 3481
  4. 120
  5. 18
  6. 17
  7. 253
  8. 33
  9. 1200
  10. 86.25
  11. 412
  12. 1500
  13. correct
  14. 211
  15. 379
  16. 18
  17. 82
  18. 96.75
  19. 194
  20. correct
  21. 64
  22. 270
  23. 385
  24. 22
  25. 15
  26. 360
  27. 236
  28. 328
  29. 102
  30. 330
  31. 329
  32. 268
  33. 249
  34. 120
  35. 192
  36. 198
  37. 2100
  38. 43
  39. 330
  40. 16

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