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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 530 · 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. 1.405 + 48 =
  2. 2.₹72.85 + ₹16.50 =
  3. 3.276 + 97 =
  4. 4.19² =
  5. 5.₹90.95 − ₹37.40 =
  6. 6.₹10.60 + ₹21.60 =
  7. 7.49 × 5 =
  8. 8.169 − 89 =
  9. 9.110 − 89 =
  10. 10.91² =
  11. 11.₹43.40 − ₹36.35 =
  12. 12.559 − 89 =
  13. 13.9 + 1 + 5 + 5 =
  14. 14.5 × 15 =
  15. 15.Best estimate of 78 × 82? (a) 12800 (b) 64000 (c) 6400 (d) 640
  16. 16.65 × 8 =
  17. 17.49² =
  18. 18.3 + 1 + 3 + 7 =
  19. 19.₹46.60 + ₹48.95 =
  20. 20.9 + 5 + 3 + 1 + 5 =
  21. 21.168 + 59 =
  22. 22.48 × 8 =
  23. 23.338 − 96 =
  24. 24.84 + 56 + 23 + 39 =
  25. 25.572 − 68 =
  26. 26.12 × 13 =
  27. 27.11 × 19 =
  28. 28.Check with nines: 495 + 240 = 735. Correct or wrong? (a) wrong (b) correct
  29. 29.Best estimate of 49 × 39? (a) 200 (b) 4000 (c) 20000 (d) 2000
  30. 30.12 × 15 =
  31. 31.46 × 15 =
  32. 32.41² =
  33. 33.49 × 15 =
  34. 34.27 + 22 + 48 + 56 =
  35. 35.13 + 25 + 42 + 43 =
  36. 36.265 − 39 =
  37. 37.Best estimate of 51 × 68? (a) 7000 (b) 350 (c) 35000 (d) 3500
  38. 38.10% of 180 =
  39. 39.70 + 58 + 85 + 17 =
  40. 40.1 + 5 + 3 + 9 =

Answer key

  1. 453
  2. 89.35
  3. 373
  4. 361
  5. 53.55
  6. 32.2
  7. 245
  8. 80
  9. 21
  10. 8281
  11. 7.05
  12. 470
  13. 20
  14. 75
  15. 6400
  16. 520
  17. 2401
  18. 14
  19. 95.55
  20. 23
  21. 227
  22. 384
  23. 242
  24. 202
  25. 504
  26. 156
  27. 209
  28. correct
  29. 2000
  30. 180
  31. 690
  32. 1681
  33. 735
  34. 153
  35. 123
  36. 226
  37. 3500
  38. 18
  39. 230
  40. 18

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