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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 45 · 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. 1.167 − 98 =
  2. 2.77 × 50 =
  3. 3.Best estimate of 503 × 4? (a) 4000 (b) 20000 (c) 2000 (d) 200
  4. 4.122 + 38 =
  5. 5.₹37.15 − ₹26.20 =
  6. 6.82 + 61 + 60 + 32 =
  7. 7.210 ÷ 5 =
  8. 8.Best estimate of 38 × 28? (a) 12000 (b) 1200 (c) 120 (d) 2400
  9. 9.Best estimate of 898 × 3? (a) 27000 (b) 2700 (c) 270 (d) 5400
  10. 10.725 ÷ 5 =
  11. 11.15 × 16 =
  12. 12.74 + 59 + 47 + 59 =
  13. 13.7 + 3 + 3 + 5 =
  14. 14.900 ÷ 5 =
  15. 15.51 + 58 =
  16. 16.42 × 4 =
  17. 17.420 − 27 =
  18. 18.21² =
  19. 19.70 × 50 =
  20. 20.351 + 97 =
  21. 21.79² =
  22. 22.1300 ÷ 50 =
  23. 23.364 + 47 =
  24. 24.Best estimate of 88 × 32? (a) 270 (b) 27000 (c) 2700 (d) 5400
  25. 25.593 − 97 =
  26. 26.440 + 59 =
  27. 27.66 × 5 =
  28. 28.13 × 15 =
  29. 29.6 + 5 + 1 + 5 =
  30. 30.19² =
  31. 31.234 − 76 =
  32. 32.13 × 14 =
  33. 33.109 × 4 =
  34. 34.₹12.95 + ₹35.25 =
  35. 35.12 × 18 =
  36. 36.Check with nines: 89 × 46 = 4094. Correct or wrong? (a) correct (b) wrong
  37. 37.39 + 20 + 38 + 12 =
  38. 38.71² =
  39. 39.11 × 13 =
  40. 40.1% of 270 =

Answer key

  1. 69
  2. 3850
  3. 2000
  4. 160
  5. 10.95
  6. 235
  7. 42
  8. 1200
  9. 2700
  10. 145
  11. 240
  12. 239
  13. 18
  14. 180
  15. 109
  16. 168
  17. 393
  18. 441
  19. 3500
  20. 448
  21. 6241
  22. 26
  23. 411
  24. 2700
  25. 496
  26. 499
  27. 330
  28. 195
  29. 17
  30. 361
  31. 158
  32. 182
  33. 436
  34. 48.2
  35. 216
  36. correct
  37. 109
  38. 5041
  39. 143
  40. 2.7

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