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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 326 · 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. 1.379 − 17 =
  2. 2.Best estimate of 98 × 6? (a) 600 (b) 1200 (c) 60 (d) 6000
  3. 3.71² =
  4. 4.10% of 530 =
  5. 5.61 × 15 =
  6. 6.1375 ÷ 25 =
  7. 7.575 ÷ 5 =
  8. 8.45 + 29 =
  9. 9.78 + 88 =
  10. 10.975 ÷ 25 =
  11. 11.1% of 20 =
  12. 12.Check with nines: 956 + 538 = 1488. Correct or wrong? (a) wrong (b) correct
  13. 13.288 + 77 =
  14. 14.18 × 16 =
  15. 15.₹37.45 + ₹19.90 =
  16. 16.52 + 57 + 46 + 39 =
  17. 17.1800 ÷ 50 =
  18. 18.₹54.70 + ₹22.80 =
  19. 19.417 − 49 =
  20. 20.20% of 110 =
  21. 21.65 × 8 =
  22. 22.17 × 15 =
  23. 23.24 × 15 =
  24. 24.Best estimate of 398 × 7? (a) 5600 (b) 280 (c) 28000 (d) 2800
  25. 25.49² =
  26. 26.32 × 15 =
  27. 27.₹34.85 − ₹24.05 =
  28. 28.₹71.05 − ₹29.50 =
  29. 29.900 ÷ 25 =
  30. 30.146 + 38 =
  31. 31.17 × 14 =
  32. 32.12 × 13 =
  33. 33.20% of 430 =
  34. 34.73 × 50 =
  35. 35.237 − 69 =
  36. 36.5% of 360 =
  37. 37.29² =
  38. 38.₹83.25 − ₹23.90 =
  39. 39.Check with nines: 542 + 299 = 849. Correct or wrong? (a) wrong (b) correct
  40. 40.21² =

Answer key

  1. 362
  2. 600
  3. 5041
  4. 53
  5. 915
  6. 55
  7. 115
  8. 74
  9. 166
  10. 39
  11. 0.2
  12. wrong
  13. 365
  14. 288
  15. 57.35
  16. 194
  17. 36
  18. 77.5
  19. 368
  20. 22
  21. 520
  22. 255
  23. 360
  24. 2800
  25. 2401
  26. 480
  27. 10.8
  28. 41.55
  29. 36
  30. 184
  31. 238
  32. 156
  33. 86
  34. 3650
  35. 168
  36. 18
  37. 841
  38. 59.35
  39. wrong
  40. 441

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