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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 294 · 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. 1.23 × 15 =
  2. 2.₹63.10 + ₹3.40 =
  3. 3.18 × 15 =
  4. 4.5 + 7 + 9 + 1 + 9 =
  5. 5.49 × 4 =
  6. 6.50% of 620 =
  7. 7.5 + 7 + 4 + 2 + 6 =
  8. 8.25% of 150 =
  9. 9.51² =
  10. 10.490 ÷ 5 =
  11. 11.Best estimate of 69 × 21? (a) 14000 (b) 140 (c) 1400 (d) 2800
  12. 12.14 × 17 =
  13. 13.34 + 97 =
  14. 14.20 × 4 =
  15. 15.39 × 4 =
  16. 16.15 × 17 =
  17. 17.20% of 430 =
  18. 18.2 + 3 + 3 + 8 + 2 =
  19. 19.43 × 5 =
  20. 20.50 × 8 =
  21. 21.89 + 19 =
  22. 22.₹74.70 + ₹31.50 =
  23. 23.59² =
  24. 24.11 × 12 =
  25. 25.473 − 28 =
  26. 26.1% of 230 =
  27. 27.41² =
  28. 28.Check with nines: 890 + 272 = 1154. Correct or wrong? (a) correct (b) wrong
  29. 29.13 × 16 =
  30. 30.13 × 17 =
  31. 31.13 + 42 + 30 + 24 =
  32. 32.55 × 50 =
  33. 33.15 × 15 =
  34. 34.69 + 35 + 36 + 16 =
  35. 35.375 ÷ 25 =
  36. 36.19² =
  37. 37.Best estimate of 302 × 5? (a) 15000 (b) 150 (c) 1500 (d) 3000
  38. 38.₹25.35 + ₹11.55 =
  39. 39.178 − 98 =
  40. 40.₹80.35 + ₹47.95 =

Answer key

  1. 345
  2. 66.5
  3. 270
  4. 31
  5. 196
  6. 310
  7. 24
  8. 37.5
  9. 2601
  10. 98
  11. 1400
  12. 238
  13. 131
  14. 80
  15. 156
  16. 255
  17. 86
  18. 18
  19. 215
  20. 400
  21. 108
  22. 106.2
  23. 3481
  24. 132
  25. 445
  26. 2.3
  27. 1681
  28. wrong
  29. 208
  30. 221
  31. 109
  32. 2750
  33. 225
  34. 156
  35. 15
  36. 361
  37. 1500
  38. 36.9
  39. 80
  40. 128.3

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