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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 250 · 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. 1.5% of 340 =
  2. 2.52 × 15 =
  3. 3.Check with nines: 246 + 358 = 597. Correct or wrong? (a) correct (b) wrong
  4. 4.82 × 4 =
  5. 5.82 × 50 =
  6. 6.550 ÷ 5 =
  7. 7.406 − 76 =
  8. 8.47 × 4 =
  9. 9.36 × 8 =
  10. 10.13 × 15 =
  11. 11.180 ÷ 5 =
  12. 12.600 ÷ 50 =
  13. 13.304 + 89 =
  14. 14.65 × 5 =
  15. 15.17 × 12 =
  16. 16.7 × 15 =
  17. 17.261 − 76 =
  18. 18.Best estimate of 797 × 5? (a) 8000 (b) 40000 (c) 400 (d) 4000
  19. 19.81² =
  20. 20.1 + 6 + 6 + 9 =
  21. 21.Best estimate of 88 × 88? (a) 16200 (b) 810 (c) 81000 (d) 8100
  22. 22.18 × 18 =
  23. 23.16 × 15 =
  24. 24.44 + 39 + 26 + 75 =
  25. 25.37 × 50 =
  26. 26.14 × 15 =
  27. 27.Best estimate of 28 × 89? (a) 270 (b) 5400 (c) 2700 (d) 27000
  28. 28.59 × 50 =
  29. 29.₹48.10 − ₹27.70 =
  30. 30.475 + 38 =
  31. 31.₹28.15 − ₹21.40 =
  32. 32.253 + 17 =
  33. 33.1050 ÷ 50 =
  34. 34.121 × 4 =
  35. 35.458 + 79 =
  36. 36.18 × 5 =
  37. 37.23 × 50 =
  38. 38.41² =
  39. 39.42 × 15 =
  40. 40.312 − 26 =

Answer key

  1. 17
  2. 780
  3. wrong
  4. 328
  5. 4100
  6. 110
  7. 330
  8. 188
  9. 288
  10. 195
  11. 36
  12. 12
  13. 393
  14. 325
  15. 204
  16. 105
  17. 185
  18. 4000
  19. 6561
  20. 22
  21. 8100
  22. 324
  23. 240
  24. 184
  25. 1850
  26. 210
  27. 2700
  28. 2950
  29. 20.4
  30. 513
  31. 6.75
  32. 270
  33. 21
  34. 484
  35. 537
  36. 90
  37. 1150
  38. 1681
  39. 630
  40. 286

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