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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 861 · 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 × 5 =
  2. 2.136 + 29 =
  3. 3.895 ÷ 5 =
  4. 4.1950 ÷ 50 =
  5. 5.176 − 18 =
  6. 6.Check with nines: 60 × 37 = 2220. Correct or wrong? (a) correct (b) wrong
  7. 7.15% of 190 =
  8. 8.163 − 29 =
  9. 9.156 + 18 =
  10. 10.50% of 470 =
  11. 11.28 × 8 =
  12. 12.306 − 97 =
  13. 13.66 + 73 + 78 + 55 =
  14. 14.15 × 16 =
  15. 15.19² =
  16. 16.1450 ÷ 50 =
  17. 17.145 − 79 =
  18. 18.38 × 8 =
  19. 19.15 + 26 + 22 + 17 =
  20. 20.479 − 69 =
  21. 21.154 × 4 =
  22. 22.79² =
  23. 23.39² =
  24. 24.41 × 15 =
  25. 25.15 × 14 =
  26. 26.27 + 32 + 48 + 51 =
  27. 27.384 − 18 =
  28. 28.Best estimate of 701 × 7? (a) 4900 (b) 9800 (c) 49000 (d) 490
  29. 29.45 × 50 =
  30. 30.16 × 15 =
  31. 31.113 − 18 =
  32. 32.Check with nines: 233 + 376 = 602. Correct or wrong? (a) correct (b) wrong
  33. 33.26 × 15 =
  34. 34.50 + 54 + 27 + 48 =
  35. 35.370 ÷ 5 =
  36. 36.21² =
  37. 37.7 + 7 + 9 + 2 + 1 =
  38. 38.50% of 210 =
  39. 39.5 + 7 + 3 + 1 + 3 =
  40. 40.198 + 57 =

Answer key

  1. 155
  2. 165
  3. 179
  4. 39
  5. 158
  6. correct
  7. 28.5
  8. 134
  9. 174
  10. 235
  11. 224
  12. 209
  13. 272
  14. 240
  15. 361
  16. 29
  17. 66
  18. 304
  19. 80
  20. 410
  21. 616
  22. 6241
  23. 1521
  24. 615
  25. 210
  26. 158
  27. 366
  28. 4900
  29. 2250
  30. 240
  31. 95
  32. wrong
  33. 390
  34. 179
  35. 74
  36. 441
  37. 26
  38. 105
  39. 19
  40. 255

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