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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 438 · 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. 1.18 × 14 =
  2. 2.2 + 7 + 8 + 9 =
  3. 3.6 + 1 + 9 + 5 + 1 =
  4. 4.4 + 1 + 9 + 6 =
  5. 5.89² =
  6. 6.Best estimate of 92 × 18? (a) 18000 (b) 180 (c) 3600 (d) 1800
  7. 7.29² =
  8. 8.49² =
  9. 9.92 × 50 =
  10. 10.8 + 5 + 1 + 5 + 7 =
  11. 11.31² =
  12. 12.545 − 88 =
  13. 13.62 + 84 + 80 + 25 =
  14. 14.8 + 3 + 1 + 8 + 9 =
  15. 15.403 − 96 =
  16. 16.64 + 17 =
  17. 17.Check with nines: 188 + 401 = 594. Correct or wrong? (a) wrong (b) correct
  18. 18.Best estimate of 102 × 3? (a) 600 (b) 3000 (c) 300 (d) 30
  19. 19.1 + 9 + 3 + 6 + 7 =
  20. 20.77 × 4 =
  21. 21.50 × 15 =
  22. 22.15 × 8 =
  23. 23.₹12.25 + ₹42.75 =
  24. 24.73 + 21 + 38 + 28 =
  25. 25.2 + 7 + 1 + 9 =
  26. 26.364 − 98 =
  27. 27.114 × 4 =
  28. 28.528 − 69 =
  29. 29.10% of 540 =
  30. 30.13 × 14 =
  31. 31.140 × 4 =
  32. 32.50 + 37 + 52 + 52 =
  33. 33.59² =
  34. 34.5% of 590 =
  35. 35.Best estimate of 59 × 41? (a) 4800 (b) 240 (c) 24000 (d) 2400
  36. 36.9 + 3 + 2 + 8 =
  37. 37.1 + 9 + 8 + 5 + 9 =
  38. 38.568 − 47 =
  39. 39.63 × 5 =
  40. 40.378 + 17 =

Answer key

  1. 252
  2. 26
  3. 22
  4. 20
  5. 7921
  6. 1800
  7. 841
  8. 2401
  9. 4600
  10. 26
  11. 961
  12. 457
  13. 251
  14. 29
  15. 307
  16. 81
  17. wrong
  18. 300
  19. 26
  20. 308
  21. 750
  22. 120
  23. 55
  24. 160
  25. 19
  26. 266
  27. 456
  28. 459
  29. 54
  30. 182
  31. 560
  32. 191
  33. 3481
  34. 29.5
  35. 2400
  36. 22
  37. 32
  38. 521
  39. 315
  40. 395

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