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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 27 · 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. 1.323 + 19 =
  2. 2.375 ÷ 25 =
  3. 3.Best estimate of 59 × 69? (a) 42000 (b) 420 (c) 4200 (d) 8400
  4. 4.60 + 46 + 44 + 62 =
  5. 5.Check with nines: 305 + 319 = 624. Correct or wrong? (a) correct (b) wrong
  6. 6.19 × 17 =
  7. 7.₹75.50 − ₹47.05 =
  8. 8.₹61.45 − ₹40.55 =
  9. 9.10 × 15 =
  10. 10.3 + 2 + 4 + 7 =
  11. 11.480 ÷ 5 =
  12. 12.215 + 88 =
  13. 13.201 − 36 =
  14. 14.400 ÷ 50 =
  15. 15.520 ÷ 5 =
  16. 16.200 ÷ 25 =
  17. 17.37 + 48 =
  18. 18.Check with nines: 696 + 458 = 1155. Correct or wrong? (a) correct (b) wrong
  19. 19.77 + 77 =
  20. 20.10 × 15 =
  21. 21.17 × 18 =
  22. 22.1% of 150 =
  23. 23.19 × 15 =
  24. 24.15% of 50 =
  25. 25.64 × 15 =
  26. 26.97 + 97 =
  27. 27.146 − 47 =
  28. 28.14 × 15 =
  29. 29.109 × 4 =
  30. 30.₹98.70 − ₹27.95 =
  31. 31.295 ÷ 5 =
  32. 32.₹29.75 − ₹14.25 =
  33. 33.10% of 800 =
  34. 34.1% of 800 =
  35. 35.₹27.20 + ₹10.40 =
  36. 36.79² =
  37. 37.31² =
  38. 38.61 + 88 + 60 + 60 =
  39. 39.63 − 17 =
  40. 40.202 + 77 =

Answer key

  1. 342
  2. 15
  3. 4200
  4. 212
  5. correct
  6. 323
  7. 28.45
  8. 20.9
  9. 150
  10. 16
  11. 96
  12. 303
  13. 165
  14. 8
  15. 104
  16. 8
  17. 85
  18. wrong
  19. 154
  20. 150
  21. 306
  22. 1.5
  23. 285
  24. 7.5
  25. 960
  26. 194
  27. 99
  28. 210
  29. 436
  30. 70.75
  31. 59
  32. 15.5
  33. 80
  34. 8
  35. 37.6
  36. 6241
  37. 961
  38. 269
  39. 46
  40. 279

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