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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 264 · 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. 1.75 + 56 + 76 + 57 =
  2. 2.Best estimate of 803 × 5? (a) 8000 (b) 40000 (c) 4000 (d) 400
  3. 3.₹62.80 + ₹12.95 =
  4. 4.1% of 810 =
  5. 5.34 × 15 =
  6. 6.50 + 40 + 21 + 76 =
  7. 7.60 + 77 =
  8. 8.₹9.85 − ₹8.60 =
  9. 9.1100 ÷ 50 =
  10. 10.424 + 97 =
  11. 11.13 × 15 =
  12. 12.36 × 15 =
  13. 13.59² =
  14. 14.354 + 48 =
  15. 15.21 × 4 =
  16. 16.₹89.90 + ₹39.65 =
  17. 17.17 × 15 =
  18. 18.126 − 26 =
  19. 19.233 + 77 =
  20. 20.26 × 4 =
  21. 21.₹49.90 − ₹44.30 =
  22. 22.53 × 8 =
  23. 23.19 × 11 =
  24. 24.14 × 8 =
  25. 25.15 × 19 =
  26. 26.49² =
  27. 27.71² =
  28. 28.260 ÷ 5 =
  29. 29.11 × 12 =
  30. 30.364 − 16 =
  31. 31.15% of 220 =
  32. 32.117 − 19 =
  33. 33.Best estimate of 797 × 7? (a) 11200 (b) 56000 (c) 560 (d) 5600
  34. 34.Check with nines: 14 × 68 = 952. Correct or wrong? (a) wrong (b) correct
  35. 35.48 × 15 =
  36. 36.₹40.25 − ₹28.35 =
  37. 37.54 × 50 =
  38. 38.12 × 17 =
  39. 39.Check with nines: 552 + 292 = 844. Correct or wrong? (a) wrong (b) correct
  40. 40.37 + 99 =

Answer key

  1. 264
  2. 4000
  3. 75.75
  4. 8.1
  5. 510
  6. 187
  7. 137
  8. 1.25
  9. 22
  10. 521
  11. 195
  12. 540
  13. 3481
  14. 402
  15. 84
  16. 129.55
  17. 255
  18. 100
  19. 310
  20. 104
  21. 5.6
  22. 424
  23. 209
  24. 112
  25. 285
  26. 2401
  27. 5041
  28. 52
  29. 132
  30. 348
  31. 33
  32. 98
  33. 5600
  34. correct
  35. 720
  36. 11.9
  37. 2700
  38. 204
  39. correct
  40. 136

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