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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 124 · 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. 1.59 × 15 =
  2. 2.140 ÷ 5 =
  3. 3.5 + 3 + 4 + 3 + 5 =
  4. 4.79² =
  5. 5.50% of 690 =
  6. 6.383 + 69 =
  7. 7.1% of 40 =
  8. 8.166 − 36 =
  9. 9.₹17.10 − ₹13.90 =
  10. 10.29² =
  11. 11.350 + 17 =
  12. 12.8 + 9 + 3 + 1 =
  13. 13.730 ÷ 5 =
  14. 14.₹33.55 + ₹31.15 =
  15. 15.88 × 50 =
  16. 16.3 + 2 + 3 + 3 + 7 =
  17. 17.210 + 58 =
  18. 18.71² =
  19. 19.₹26.60 − ₹2.25 =
  20. 20.51² =
  21. 21.62 + 86 + 74 + 89 =
  22. 22.15% of 40 =
  23. 23.18 × 13 =
  24. 24.376 − 76 =
  25. 25.20% of 680 =
  26. 26.Check with nines: 71 × 80 = 5681. Correct or wrong? (a) correct (b) wrong
  27. 27.447 + 47 =
  28. 28.136 − 99 =
  29. 29.94 × 50 =
  30. 30.₹21.85 + ₹22.70 =
  31. 31.396 + 58 =
  32. 32.188 − 16 =
  33. 33.34 × 4 =
  34. 34.₹74.90 + ₹37.05 =
  35. 35.244 + 77 =
  36. 36.79² =
  37. 37.31² =
  38. 38.₹13.60 + ₹30.95 =
  39. 39.19 × 12 =
  40. 40.393 − 26 =

Answer key

  1. 885
  2. 28
  3. 20
  4. 6241
  5. 345
  6. 452
  7. 0.4
  8. 130
  9. 3.2
  10. 841
  11. 367
  12. 21
  13. 146
  14. 64.7
  15. 4400
  16. 18
  17. 268
  18. 5041
  19. 24.35
  20. 2601
  21. 311
  22. 6
  23. 234
  24. 300
  25. 136
  26. wrong
  27. 494
  28. 37
  29. 4700
  30. 44.55
  31. 454
  32. 172
  33. 136
  34. 111.95
  35. 321
  36. 6241
  37. 961
  38. 44.55
  39. 228
  40. 367

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