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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 86 · 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. 1.16 × 15 =
  2. 2.Best estimate of 72 × 78? (a) 11200 (b) 5600 (c) 560 (d) 56000
  3. 3.25% of 190 =
  4. 4.Best estimate of 498 × 3? (a) 15000 (b) 150 (c) 3000 (d) 1500
  5. 5.12 × 15 =
  6. 6.23 × 50 =
  7. 7.59² =
  8. 8.61² =
  9. 9.13 × 16 =
  10. 10.14 + 48 + 20 + 13 =
  11. 11.₹88.05 + ₹3.80 =
  12. 12.13 × 50 =
  13. 13.104 − 97 =
  14. 14.₹93.10 + ₹10.95 =
  15. 15.375 ÷ 25 =
  16. 16.13 × 15 =
  17. 17.62 × 15 =
  18. 18.25 × 8 =
  19. 19.168 − 76 =
  20. 20.452 + 67 =
  21. 21.Best estimate of 502 × 4? (a) 200 (b) 4000 (c) 20000 (d) 2000
  22. 22.5 + 7 + 6 + 3 =
  23. 23.16 × 8 =
  24. 24.790 ÷ 5 =
  25. 25.17 × 5 =
  26. 26.195 + 27 =
  27. 27.12 × 12 =
  28. 28.13 × 15 =
  29. 29.18 × 16 =
  30. 30.68 × 5 =
  31. 31.Best estimate of 502 × 6? (a) 30000 (b) 3000 (c) 6000 (d) 300
  32. 32.5% of 870 =
  33. 33.1 + 9 + 1 + 9 =
  34. 34.₹56.90 + ₹46.20 =
  35. 35.433 − 76 =
  36. 36.69² =
  37. 37.₹91.70 + ₹6.10 =
  38. 38.290 ÷ 5 =
  39. 39.471 − 77 =
  40. 40.1 + 1 + 1 + 9 =

Answer key

  1. 240
  2. 5600
  3. 47.5
  4. 1500
  5. 180
  6. 1150
  7. 3481
  8. 3721
  9. 208
  10. 95
  11. 91.85
  12. 650
  13. 7
  14. 104.05
  15. 15
  16. 195
  17. 930
  18. 200
  19. 92
  20. 519
  21. 2000
  22. 21
  23. 128
  24. 158
  25. 85
  26. 222
  27. 144
  28. 195
  29. 288
  30. 340
  31. 3000
  32. 43.5
  33. 20
  34. 103.1
  35. 357
  36. 4761
  37. 97.8
  38. 58
  39. 394
  40. 12

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