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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 263 · 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. 1.19 + 51 + 70 + 70 =
  2. 2.13 × 15 =
  3. 3.45 × 4 =
  4. 4.16 × 15 =
  5. 5.38 × 15 =
  6. 6.1100 ÷ 50 =
  7. 7.Best estimate of 91 × 18? (a) 3600 (b) 180 (c) 18000 (d) 1800
  8. 8.9 + 5 + 5 + 2 + 8 =
  9. 9.71² =
  10. 10.21² =
  11. 11.800 ÷ 25 =
  12. 12.₹30.95 + ₹4.75 =
  13. 13.53 × 15 =
  14. 14.71² =
  15. 15.₹51.60 + ₹46.55 =
  16. 16.540 ÷ 5 =
  17. 17.201 − 87 =
  18. 18.1 + 9 + 1 + 1 =
  19. 19.8 + 2 + 7 + 6 =
  20. 20.350 + 97 =
  21. 21.Check with nines: 13 × 32 = 415. Correct or wrong? (a) wrong (b) correct
  22. 22.₹5.10 + ₹30.05 =
  23. 23.247 + 48 =
  24. 24.79 × 50 =
  25. 25.54 × 15 =
  26. 26.29 + 47 + 85 + 29 =
  27. 27.14 × 50 =
  28. 28.57 × 15 =
  29. 29.₹87.20 − ₹6.25 =
  30. 30.₹40.25 − ₹5.80 =
  31. 31.7 + 7 + 7 + 3 =
  32. 32.19 × 15 =
  33. 33.Best estimate of 68 × 19? (a) 1400 (b) 140 (c) 14000 (d) 2800
  34. 34.19² =
  35. 35.8 × 15 =
  36. 36.₹54.25 + ₹10.70 =
  37. 37.130 × 4 =
  38. 38.₹18.35 + ₹17.90 =
  39. 39.50% of 830 =
  40. 40.59 × 4 =

Answer key

  1. 210
  2. 195
  3. 180
  4. 240
  5. 570
  6. 22
  7. 1800
  8. 29
  9. 5041
  10. 441
  11. 32
  12. 35.7
  13. 795
  14. 5041
  15. 98.15
  16. 108
  17. 114
  18. 12
  19. 23
  20. 447
  21. wrong
  22. 35.15
  23. 295
  24. 3950
  25. 810
  26. 190
  27. 700
  28. 855
  29. 80.95
  30. 34.45
  31. 24
  32. 285
  33. 1400
  34. 361
  35. 120
  36. 64.95
  37. 520
  38. 36.25
  39. 415
  40. 236

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