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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 545 · 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.Best estimate of 299 × 8? (a) 24000 (b) 240 (c) 2400 (d) 4800
  2. 2.71² =
  3. 3.232 + 27 =
  4. 4.12 × 5 =
  5. 5.10% of 190 =
  6. 6.20% of 580 =
  7. 7.15 × 15 =
  8. 8.105 + 99 =
  9. 9.13 × 11 =
  10. 10.31 × 50 =
  11. 11.5 × 15 =
  12. 12.50% of 660 =
  13. 13.19 × 12 =
  14. 14.145 ÷ 5 =
  15. 15.89² =
  16. 16.59 × 50 =
  17. 17.Check with nines: 677 + 627 = 1304. Correct or wrong? (a) wrong (b) correct
  18. 18.48 × 15 =
  19. 19.5% of 510 =
  20. 20.444 + 58 =
  21. 21.2 + 8 + 3 + 4 + 6 =
  22. 22.436 + 18 =
  23. 23.Check with nines: 446 + 313 = 760. Correct or wrong? (a) correct (b) wrong
  24. 24.₹59.10 + ₹38.40 =
  25. 25.39² =
  26. 26.Best estimate of 899 × 4? (a) 3600 (b) 36000 (c) 7200 (d) 360
  27. 27.50 × 5 =
  28. 28.495 − 99 =
  29. 29.19² =
  30. 30.300 ÷ 25 =
  31. 31.₹78.50 − ₹47.45 =
  32. 32.74 + 27 =
  33. 33.1% of 760 =
  34. 34.855 ÷ 5 =
  35. 35.64 × 4 =
  36. 36.350 ÷ 50 =
  37. 37.Best estimate of 202 × 7? (a) 140 (b) 1400 (c) 14000 (d) 2800
  38. 38.47 × 5 =
  39. 39.600 ÷ 50 =
  40. 40.12 × 15 =

Answer key

  1. 2400
  2. 5041
  3. 259
  4. 60
  5. 19
  6. 116
  7. 225
  8. 204
  9. 143
  10. 1550
  11. 75
  12. 330
  13. 228
  14. 29
  15. 7921
  16. 2950
  17. correct
  18. 720
  19. 25.5
  20. 502
  21. 23
  22. 454
  23. wrong
  24. 97.5
  25. 1521
  26. 3600
  27. 250
  28. 396
  29. 361
  30. 12
  31. 31.05
  32. 101
  33. 7.6
  34. 171
  35. 256
  36. 7
  37. 1400
  38. 235
  39. 12
  40. 180

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