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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 325 · 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. 1.89 × 50 =
  2. 2.123 + 38 =
  3. 3.10% of 60 =
  4. 4.231 − 96 =
  5. 5.Best estimate of 603 × 7? (a) 4200 (b) 8400 (c) 420 (d) 42000
  6. 6.88 × 4 =
  7. 7.36 × 8 =
  8. 8.₹17.55 − ₹15.10 =
  9. 9.57 + 74 + 47 + 76 =
  10. 10.20% of 430 =
  11. 11.Best estimate of 597 × 3? (a) 3600 (b) 1800 (c) 180 (d) 18000
  12. 12.13 × 19 =
  13. 13.3 + 2 + 8 + 7 + 5 =
  14. 14.48 + 47 + 74 + 14 =
  15. 15.₹94.45 − ₹15.85 =
  16. 16.Best estimate of 597 × 5? (a) 30000 (b) 3000 (c) 6000 (d) 300
  17. 17.8 + 6 + 5 + 5 =
  18. 18.10% of 890 =
  19. 19.29 × 15 =
  20. 20.50 × 5 =
  21. 21.7 + 6 + 4 + 8 =
  22. 22.4 + 2 + 1 + 8 =
  23. 23.Best estimate of 701 × 9? (a) 6300 (b) 630 (c) 63000 (d) 12600
  24. 24.79² =
  25. 25.64 + 77 =
  26. 26.262 + 77 =
  27. 27.28 + 64 + 38 + 60 =
  28. 28.1% of 900 =
  29. 29.61² =
  30. 30.875 ÷ 25 =
  31. 31.208 − 17 =
  32. 32.56 × 50 =
  33. 33.6 + 5 + 9 + 5 =
  34. 34.1% of 100 =
  35. 35.66 × 50 =
  36. 36.₹10.20 + ₹19.15 =
  37. 37.Check with nines: 67 × 86 = 5762. Correct or wrong? (a) correct (b) wrong
  38. 38.48 × 4 =
  39. 39.321 − 69 =
  40. 40.9 + 7 + 3 + 1 =

Answer key

  1. 4450
  2. 161
  3. 6
  4. 135
  5. 4200
  6. 352
  7. 288
  8. 2.45
  9. 254
  10. 86
  11. 1800
  12. 247
  13. 25
  14. 183
  15. 78.6
  16. 3000
  17. 24
  18. 89
  19. 435
  20. 250
  21. 25
  22. 15
  23. 6300
  24. 6241
  25. 141
  26. 339
  27. 190
  28. 9
  29. 3721
  30. 35
  31. 191
  32. 2800
  33. 25
  34. 1
  35. 3300
  36. 29.35
  37. correct
  38. 192
  39. 252
  40. 20

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