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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 200 · 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. 1.98 + 38 =
  2. 2.50 + 30 + 19 + 71 =
  3. 3.36 × 15 =
  4. 4.Best estimate of 98 × 9? (a) 9000 (b) 1800 (c) 900 (d) 90
  5. 5.142 − 56 =
  6. 6.482 + 39 =
  7. 7.61² =
  8. 8.Best estimate of 32 × 58? (a) 1800 (b) 18000 (c) 180 (d) 3600
  9. 9.₹98.25 − ₹32.20 =
  10. 10.₹7.30 + ₹45.20 =
  11. 11.76 + 68 =
  12. 12.78 + 50 + 54 + 49 =
  13. 13.5% of 750 =
  14. 14.34 × 5 =
  15. 15.62 × 8 =
  16. 16.26 + 78 =
  17. 17.Check with nines: 879 + 316 = 1188. Correct or wrong? (a) correct (b) wrong
  18. 18.417 + 28 =
  19. 19.8 + 1 + 2 + 7 =
  20. 20.416 + 19 =
  21. 21.28 × 5 =
  22. 22.20% of 680 =
  23. 23.12 × 8 =
  24. 24.217 − 68 =
  25. 25.39 + 79 =
  26. 26.10% of 780 =
  27. 27.67 − 57 =
  28. 28.226 + 28 =
  29. 29.44 × 5 =
  30. 30.83 + 29 + 76 + 69 =
  31. 31.152 − 47 =
  32. 32.8 + 4 + 6 + 3 =
  33. 33.4 + 2 + 4 + 2 + 8 =
  34. 34.Check with nines: 88 × 47 = 4141. Correct or wrong? (a) wrong (b) correct
  35. 35.30 + 22 + 74 + 61 =
  36. 36.1% of 760 =
  37. 37.1950 ÷ 50 =
  38. 38.695 ÷ 5 =
  39. 39.25% of 830 =
  40. 40.14 + 70 + 39 + 45 =

Answer key

  1. 136
  2. 170
  3. 540
  4. 900
  5. 86
  6. 521
  7. 3721
  8. 1800
  9. 66.05
  10. 52.5
  11. 144
  12. 231
  13. 37.5
  14. 170
  15. 496
  16. 104
  17. wrong
  18. 445
  19. 18
  20. 435
  21. 140
  22. 136
  23. 96
  24. 149
  25. 118
  26. 78
  27. 10
  28. 254
  29. 220
  30. 257
  31. 105
  32. 21
  33. 20
  34. wrong
  35. 187
  36. 7.6
  37. 39
  38. 139
  39. 207.5
  40. 168

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