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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 793 · 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. 1.31 + 53 + 83 + 18 =
  2. 2.12 × 15 =
  3. 3.68 × 8 =
  4. 4.1 + 5 + 6 + 7 + 9 =
  5. 5.26 × 15 =
  6. 6.50% of 460 =
  7. 7.6 + 2 + 2 + 9 + 8 =
  8. 8.1400 ÷ 25 =
  9. 9.3 + 2 + 7 + 3 =
  10. 10.4 + 6 + 4 + 3 =
  11. 11.Check with nines: 290 + 536 = 826. Correct or wrong? (a) correct (b) wrong
  12. 12.51 × 15 =
  13. 13.39² =
  14. 14.20 × 15 =
  15. 15.19 × 16 =
  16. 16.Best estimate of 49 × 19? (a) 10000 (b) 1000 (c) 2000 (d) 100
  17. 17.228 + 17 =
  18. 18.50% of 140 =
  19. 19.172 + 17 =
  20. 20.410 − 39 =
  21. 21.Best estimate of 399 × 7? (a) 28000 (b) 280 (c) 2800 (d) 5600
  22. 22.22 + 48 + 44 + 27 =
  23. 23.59 + 72 + 40 + 38 =
  24. 24.42 × 8 =
  25. 25.286 + 19 =
  26. 26.8 + 4 + 7 + 2 =
  27. 27.1075 ÷ 25 =
  28. 28.5 + 5 + 5 + 6 + 6 =
  29. 29.14 × 13 =
  30. 30.492 − 19 =
  31. 31.19 × 11 =
  32. 32.217 + 97 =
  33. 33.89² =
  34. 34.Check with nines: 944 + 914 = 1858. Correct or wrong? (a) wrong (b) correct
  35. 35.1100 ÷ 50 =
  36. 36.302 − 19 =
  37. 37.6 + 5 + 4 + 9 + 1 =
  38. 38.42 + 19 =
  39. 39.95 + 17 =
  40. 40.Best estimate of 42 × 32? (a) 1200 (b) 120 (c) 12000 (d) 2400

Answer key

  1. 185
  2. 180
  3. 544
  4. 28
  5. 390
  6. 230
  7. 27
  8. 56
  9. 15
  10. 17
  11. correct
  12. 765
  13. 1521
  14. 300
  15. 304
  16. 1000
  17. 245
  18. 70
  19. 189
  20. 371
  21. 2800
  22. 141
  23. 209
  24. 336
  25. 305
  26. 21
  27. 43
  28. 27
  29. 182
  30. 473
  31. 209
  32. 314
  33. 7921
  34. correct
  35. 22
  36. 283
  37. 25
  38. 61
  39. 112
  40. 1200

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