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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 565 · 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. 1.89² =
  2. 2.462 − 49 =
  3. 3.₹52.05 + ₹44.05 =
  4. 4.12 × 11 =
  5. 5.155 × 4 =
  6. 6.3 + 3 + 7 + 9 =
  7. 7.1 + 9 + 2 + 8 =
  8. 8.₹42.85 + ₹25.65 =
  9. 9.Best estimate of 398 × 5? (a) 4000 (b) 2000 (c) 20000 (d) 200
  10. 10.16 × 15 =
  11. 11.165 − 29 =
  12. 12.16 × 17 =
  13. 13.43 × 50 =
  14. 14.7 + 4 + 9 + 3 + 6 =
  15. 15.158 × 4 =
  16. 16.₹37.65 + ₹38.15 =
  17. 17.5 + 5 + 4 + 5 + 1 =
  18. 18.Best estimate of 198 × 7? (a) 2800 (b) 1400 (c) 14000 (d) 140
  19. 19.49² =
  20. 20.250 ÷ 50 =
  21. 21.404 − 99 =
  22. 22.91 × 50 =
  23. 23.83 − 27 =
  24. 24.770 ÷ 5 =
  25. 25.127 × 4 =
  26. 26.10% of 810 =
  27. 27.87 × 4 =
  28. 28.48 × 15 =
  29. 29.41 × 8 =
  30. 30.17 × 15 =
  31. 31.Best estimate of 18 × 72? (a) 2800 (b) 140 (c) 1400 (d) 14000
  32. 32.49² =
  33. 33.Best estimate of 103 × 7? (a) 70 (b) 1400 (c) 700 (d) 7000
  34. 34.51 × 15 =
  35. 35.12 × 12 =
  36. 36.25% of 50 =
  37. 37.299 + 67 =
  38. 38.26 + 26 + 36 + 64 =
  39. 39.900 ÷ 50 =
  40. 40.280 + 38 =

Answer key

  1. 7921
  2. 413
  3. 96.1
  4. 132
  5. 620
  6. 22
  7. 20
  8. 68.5
  9. 2000
  10. 240
  11. 136
  12. 272
  13. 2150
  14. 29
  15. 632
  16. 75.8
  17. 20
  18. 1400
  19. 2401
  20. 5
  21. 305
  22. 4550
  23. 56
  24. 154
  25. 508
  26. 81
  27. 348
  28. 720
  29. 328
  30. 255
  31. 1400
  32. 2401
  33. 700
  34. 765
  35. 144
  36. 12.5
  37. 366
  38. 152
  39. 18
  40. 318

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