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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 133 · 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. 1.50% of 200 =
  2. 2.68 × 5 =
  3. 3.498 + 48 =
  4. 4.84 − 29 =
  5. 5.11 × 18 =
  6. 6.Best estimate of 39 × 32? (a) 2400 (b) 12000 (c) 1200 (d) 120
  7. 7.285 + 98 =
  8. 8.16 × 18 =
  9. 9.Check with nines: 872 + 961 = 1833. Correct or wrong? (a) correct (b) wrong
  10. 10.34 × 5 =
  11. 11.Best estimate of 701 × 9? (a) 63000 (b) 630 (c) 12600 (d) 6300
  12. 12.36 × 4 =
  13. 13.506 − 99 =
  14. 14.₹23.90 + ₹40.30 =
  15. 15.5% of 70 =
  16. 16.256 − 26 =
  17. 17.79 + 50 + 44 + 18 =
  18. 18.89 + 42 + 62 + 79 =
  19. 19.12 × 11 =
  20. 20.12 × 15 =
  21. 21.15% of 820 =
  22. 22.₹51.95 + ₹37.60 =
  23. 23.18 × 18 =
  24. 24.33 + 45 + 82 + 29 =
  25. 25.21² =
  26. 26.Check with nines: 81 × 60 = 4866. Correct or wrong? (a) correct (b) wrong
  27. 27.334 − 36 =
  28. 28.45 + 57 =
  29. 29.19² =
  30. 30.9 × 15 =
  31. 31.69² =
  32. 32.54 − 28 =
  33. 33.76 + 27 =
  34. 34.6 + 1 + 1 + 4 =
  35. 35.56 × 5 =
  36. 36.32 × 4 =
  37. 37.567 − 37 =
  38. 38.195 − 19 =
  39. 39.6 + 6 + 4 + 2 =
  40. 40.375 + 28 =

Answer key

  1. 100
  2. 340
  3. 546
  4. 55
  5. 198
  6. 1200
  7. 383
  8. 288
  9. correct
  10. 170
  11. 6300
  12. 144
  13. 407
  14. 64.2
  15. 3.5
  16. 230
  17. 191
  18. 272
  19. 132
  20. 180
  21. 123
  22. 89.55
  23. 324
  24. 189
  25. 441
  26. wrong
  27. 298
  28. 102
  29. 361
  30. 135
  31. 4761
  32. 26
  33. 103
  34. 12
  35. 280
  36. 128
  37. 530
  38. 176
  39. 18
  40. 403

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