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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 686 · 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.Best estimate of 89 × 29? (a) 270 (b) 27000 (c) 2700 (d) 5400
  2. 2.4 + 6 + 4 + 3 =
  3. 3.4 + 3 + 6 + 6 + 7 =
  4. 4.98 × 50 =
  5. 5.219 − 68 =
  6. 6.29 × 50 =
  7. 7.56 × 50 =
  8. 8.90 × 50 =
  9. 9.261 + 28 =
  10. 10.215 ÷ 5 =
  11. 11.Check with nines: 18 × 46 = 822. Correct or wrong? (a) correct (b) wrong
  12. 12.40 + 44 + 89 + 80 =
  13. 13.48 × 15 =
  14. 14.2 + 3 + 8 + 3 =
  15. 15.42 + 77 + 74 + 76 =
  16. 16.84 × 5 =
  17. 17.69 + 19 + 33 + 32 =
  18. 18.₹17.60 + ₹21.30 =
  19. 19.132 − 37 =
  20. 20.15 × 15 =
  21. 21.60 × 5 =
  22. 22.336 + 38 =
  23. 23.59² =
  24. 24.36 × 15 =
  25. 25.37 × 8 =
  26. 26.Best estimate of 42 × 52? (a) 4000 (b) 2000 (c) 200 (d) 20000
  27. 27.21 × 15 =
  28. 28.51 + 83 + 21 + 35 =
  29. 29.Check with nines: 652 + 945 = 1605. Correct or wrong? (a) wrong (b) correct
  30. 30.309 − 86 =
  31. 31.Best estimate of 79 × 31? (a) 4800 (b) 2400 (c) 240 (d) 24000
  32. 32.25 × 15 =
  33. 33.₹24.90 − ₹24.05 =
  34. 34.407 + 69 =
  35. 35.150 ÷ 25 =
  36. 36.10% of 90 =
  37. 37.81 × 4 =
  38. 38.7 × 15 =
  39. 39.98 − 27 =
  40. 40.4 + 4 + 2 + 6 =

Answer key

  1. 2700
  2. 17
  3. 26
  4. 4900
  5. 151
  6. 1450
  7. 2800
  8. 4500
  9. 289
  10. 43
  11. wrong
  12. 253
  13. 720
  14. 16
  15. 269
  16. 420
  17. 153
  18. 38.9
  19. 95
  20. 225
  21. 300
  22. 374
  23. 3481
  24. 540
  25. 296
  26. 2000
  27. 315
  28. 190
  29. wrong
  30. 223
  31. 2400
  32. 375
  33. 0.85
  34. 476
  35. 6
  36. 9
  37. 324
  38. 105
  39. 71
  40. 16

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