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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 415 · 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. 1.69² =
  2. 2.33 + 46 + 25 + 68 =
  3. 3.39² =
  4. 4.Check with nines: 62 × 93 = 5764. Correct or wrong? (a) correct (b) wrong
  5. 5.625 ÷ 5 =
  6. 6.3 + 5 + 7 + 9 =
  7. 7.42 × 15 =
  8. 8.31² =
  9. 9.25% of 210 =
  10. 10.25% of 40 =
  11. 11.61² =
  12. 12.63 + 67 =
  13. 13.5 + 9 + 6 + 1 =
  14. 14.Best estimate of 201 × 5? (a) 100 (b) 10000 (c) 2000 (d) 1000
  15. 15.401 + 18 =
  16. 16.31² =
  17. 17.257 + 99 =
  18. 18.80 × 50 =
  19. 19.10% of 360 =
  20. 20.19 × 18 =
  21. 21.₹35.30 + ₹7.05 =
  22. 22.492 − 96 =
  23. 23.₹47.05 − ₹42.10 =
  24. 24.457 − 39 =
  25. 25.442 + 79 =
  26. 26.Best estimate of 403 × 5? (a) 20000 (b) 4000 (c) 2000 (d) 200
  27. 27.10% of 180 =
  28. 28.18 × 15 =
  29. 29.526 − 98 =
  30. 30.Best estimate of 399 × 6? (a) 4800 (b) 240 (c) 24000 (d) 2400
  31. 31.49² =
  32. 32.311 − 38 =
  33. 33.245 − 67 =
  34. 34.49² =
  35. 35.523 − 16 =
  36. 36.670 ÷ 5 =
  37. 37.9 + 5 + 1 + 1 =
  38. 38.₹58.45 − ₹11.65 =
  39. 39.2 + 7 + 4 + 8 =
  40. 40.119 × 4 =

Answer key

  1. 4761
  2. 172
  3. 1521
  4. wrong
  5. 125
  6. 24
  7. 630
  8. 961
  9. 52.5
  10. 10
  11. 3721
  12. 130
  13. 21
  14. 1000
  15. 419
  16. 961
  17. 356
  18. 4000
  19. 36
  20. 342
  21. 42.35
  22. 396
  23. 4.95
  24. 418
  25. 521
  26. 2000
  27. 18
  28. 270
  29. 428
  30. 2400
  31. 2401
  32. 273
  33. 178
  34. 2401
  35. 507
  36. 134
  37. 16
  38. 46.8
  39. 21
  40. 476

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