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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 635 · 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. 1.57 × 15 =
  2. 2.₹93.70 + ₹37.40 =
  3. 3.4 + 2 + 1 + 7 + 8 =
  4. 4.493 − 97 =
  5. 5.13 × 19 =
  6. 6.15 × 15 =
  7. 7.18 × 11 =
  8. 8.8 + 4 + 8 + 5 + 2 =
  9. 9.25 × 15 =
  10. 10.478 + 79 =
  11. 11.Best estimate of 103 × 8? (a) 80 (b) 1600 (c) 800 (d) 8000
  12. 12.Check with nines: 830 + 359 = 1193. Correct or wrong? (a) wrong (b) correct
  13. 13.3 + 3 + 5 + 5 + 7 =
  14. 14.₹26.80 + ₹15.55 =
  15. 15.25% of 260 =
  16. 16.40 + 39 =
  17. 17.88 + 26 + 41 + 14 =
  18. 18.12 × 15 =
  19. 19.25% of 600 =
  20. 20.5% of 800 =
  21. 21.750 ÷ 25 =
  22. 22.84 − 39 =
  23. 23.331 − 77 =
  24. 24.15% of 320 =
  25. 25.Check with nines: 736 + 426 = 1162. Correct or wrong? (a) wrong (b) correct
  26. 26.₹81.15 + ₹48.45 =
  27. 27.89 × 4 =
  28. 28.135 ÷ 5 =
  29. 29.371 + 27 =
  30. 30.152 − 96 =
  31. 31.299 + 17 =
  32. 32.₹86.70 − ₹31.60 =
  33. 33.31 × 15 =
  34. 34.1 + 8 + 2 + 5 =
  35. 35.99 × 4 =
  36. 36.₹17.60 + ₹41.40 =
  37. 37.13 × 15 =
  38. 38.14 + 68 + 83 + 22 =
  39. 39.65 + 61 + 65 + 83 =
  40. 40.Best estimate of 78 × 61? (a) 9600 (b) 4800 (c) 48000 (d) 480

Answer key

  1. 855
  2. 131.1
  3. 22
  4. 396
  5. 247
  6. 225
  7. 198
  8. 27
  9. 375
  10. 557
  11. 800
  12. wrong
  13. 23
  14. 42.35
  15. 65
  16. 79
  17. 169
  18. 180
  19. 150
  20. 40
  21. 30
  22. 45
  23. 254
  24. 48
  25. correct
  26. 129.6
  27. 356
  28. 27
  29. 398
  30. 56
  31. 316
  32. 55.1
  33. 465
  34. 16
  35. 396
  36. 59
  37. 195
  38. 187
  39. 274
  40. 4800

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