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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 421 · 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. 1.36 + 48 + 80 + 40 =
  2. 2.₹22.60 − ₹16.55 =
  3. 3.170 − 99 =
  4. 4.87 × 4 =
  5. 5.201 + 18 =
  6. 6.2 + 3 + 3 + 8 + 1 =
  7. 7.160 − 36 =
  8. 8.₹13.25 − ₹4.65 =
  9. 9.615 ÷ 5 =
  10. 10.Check with nines: 606 + 855 = 1461. Correct or wrong? (a) wrong (b) correct
  11. 11.1 + 6 + 1 + 2 + 4 =
  12. 12.51 × 15 =
  13. 13.20 × 15 =
  14. 14.368 + 29 =
  15. 15.₹81.15 − ₹33.15 =
  16. 16.₹29.80 − ₹5.15 =
  17. 17.12 × 12 =
  18. 18.3 + 7 + 3 + 4 =
  19. 19.₹27.20 − ₹6.75 =
  20. 20.37 + 67 + 51 + 74 =
  21. 21.19 × 14 =
  22. 22.50% of 70 =
  23. 23.454 + 19 =
  24. 24.18 × 19 =
  25. 25.28 × 4 =
  26. 26.93 × 5 =
  27. 27.₹58.95 − ₹4.30 =
  28. 28.73 + 15 + 79 + 31 =
  29. 29.9 + 9 + 3 + 6 + 4 =
  30. 30.287 − 88 =
  31. 31.19 × 50 =
  32. 32.13 × 17 =
  33. 33.9 + 4 + 8 + 6 + 6 =
  34. 34.21 + 67 + 73 + 38 =
  35. 35.168 + 27 =
  36. 36.11 × 16 =
  37. 37.7 × 15 =
  38. 38.40 × 15 =
  39. 39.Best estimate of 72 × 62? (a) 8400 (b) 4200 (c) 42000 (d) 420
  40. 40.5 × 15 =

Answer key

  1. 204
  2. 6.05
  3. 71
  4. 348
  5. 219
  6. 17
  7. 124
  8. 8.6
  9. 123
  10. correct
  11. 14
  12. 765
  13. 300
  14. 397
  15. 48
  16. 24.65
  17. 144
  18. 17
  19. 20.45
  20. 229
  21. 266
  22. 35
  23. 473
  24. 342
  25. 112
  26. 465
  27. 54.65
  28. 198
  29. 31
  30. 199
  31. 950
  32. 221
  33. 33
  34. 199
  35. 195
  36. 176
  37. 105
  38. 600
  39. 4200
  40. 75

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