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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 451 · 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. 1.17 × 50 =
  2. 2.23 × 5 =
  3. 3.339 − 99 =
  4. 4.212 + 67 =
  5. 5.560 ÷ 5 =
  6. 6.4 + 7 + 5 + 6 =
  7. 7.401 − 16 =
  8. 8.3 + 1 + 3 + 3 + 7 =
  9. 9.92 × 4 =
  10. 10.75 + 40 + 87 + 59 =
  11. 11.70 × 4 =
  12. 12.91² =
  13. 13.5% of 380 =
  14. 14.59 + 22 + 25 + 35 =
  15. 15.₹45.75 − ₹29.45 =
  16. 16.285 ÷ 5 =
  17. 17.19 × 13 =
  18. 18.24 × 4 =
  19. 19.Best estimate of 899 × 4? (a) 7200 (b) 360 (c) 36000 (d) 3600
  20. 20.25 × 15 =
  21. 21.1% of 760 =
  22. 22.18 × 15 =
  23. 23.34 × 50 =
  24. 24.Check with nines: 304 + 345 = 649. Correct or wrong? (a) wrong (b) correct
  25. 25.Best estimate of 89 × 48? (a) 45000 (b) 450 (c) 9000 (d) 4500
  26. 26.64 × 8 =
  27. 27.6 + 6 + 4 + 4 =
  28. 28.75 + 21 + 30 + 70 =
  29. 29.5% of 220 =
  30. 30.Check with nines: 84 × 83 = 6972. Correct or wrong? (a) correct (b) wrong
  31. 31.276 − 99 =
  32. 32.19 × 15 =
  33. 33.3 + 3 + 7 + 1 + 6 =
  34. 34.Check with nines: 470 + 537 = 1003. Correct or wrong? (a) wrong (b) correct
  35. 35.300 + 28 =
  36. 36.21² =
  37. 37.49 × 15 =
  38. 38.387 + 68 =
  39. 39.41 × 4 =
  40. 40.75 × 8 =

Answer key

  1. 850
  2. 115
  3. 240
  4. 279
  5. 112
  6. 22
  7. 385
  8. 17
  9. 368
  10. 261
  11. 280
  12. 8281
  13. 19
  14. 141
  15. 16.3
  16. 57
  17. 247
  18. 96
  19. 3600
  20. 375
  21. 7.6
  22. 270
  23. 1700
  24. correct
  25. 4500
  26. 512
  27. 20
  28. 196
  29. 11
  30. correct
  31. 177
  32. 285
  33. 20
  34. wrong
  35. 328
  36. 441
  37. 735
  38. 455
  39. 164
  40. 600

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