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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 28 · 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. 1.8 + 8 + 3 + 3 + 2 =
  2. 2.9 + 1 + 8 + 5 =
  3. 3.34 + 72 + 29 + 56 =
  4. 4.1% of 510 =
  5. 5.Best estimate of 62 × 89? (a) 54000 (b) 10800 (c) 540 (d) 5400
  6. 6.25% of 70 =
  7. 7.289 + 17 =
  8. 8.Best estimate of 598 × 3? (a) 3600 (b) 18000 (c) 180 (d) 1800
  9. 9.8 + 3 + 2 + 5 =
  10. 10.51 × 15 =
  11. 11.Best estimate of 302 × 5? (a) 150 (b) 15000 (c) 1500 (d) 3000
  12. 12.1 + 1 + 6 + 4 =
  13. 13.88 × 5 =
  14. 14.55 + 49 + 75 + 33 =
  15. 15.₹36.30 + ₹34.70 =
  16. 16.12 × 15 =
  17. 17.319 − 78 =
  18. 18.100 − 26 =
  19. 19.38 + 44 + 87 + 28 =
  20. 20.467 − 69 =
  21. 21.₹97.15 + ₹19.05 =
  22. 22.56 × 15 =
  23. 23.1 + 9 + 4 + 6 + 5 =
  24. 24.44 × 4 =
  25. 25.127 − 17 =
  26. 26.77 × 5 =
  27. 27.Best estimate of 799 × 6? (a) 4800 (b) 480 (c) 9600 (d) 48000
  28. 28.166 − 89 =
  29. 29.86 × 50 =
  30. 30.10% of 730 =
  31. 31.502 − 36 =
  32. 32.59² =
  33. 33.520 ÷ 5 =
  34. 34.52 × 50 =
  35. 35.1450 ÷ 25 =
  36. 36.13 × 13 =
  37. 37.32 × 15 =
  38. 38.47 × 5 =
  39. 39.14 × 8 =
  40. 40.39² =

Answer key

  1. 24
  2. 23
  3. 191
  4. 5.1
  5. 5400
  6. 17.5
  7. 306
  8. 1800
  9. 18
  10. 765
  11. 1500
  12. 12
  13. 440
  14. 212
  15. 71
  16. 180
  17. 241
  18. 74
  19. 197
  20. 398
  21. 116.2
  22. 840
  23. 25
  24. 176
  25. 110
  26. 385
  27. 4800
  28. 77
  29. 4300
  30. 73
  31. 466
  32. 3481
  33. 104
  34. 2600
  35. 58
  36. 169
  37. 480
  38. 235
  39. 112
  40. 1521

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