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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 819 · 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. 1.300 ÷ 25 =
  2. 2.49² =
  3. 3.70 × 4 =
  4. 4.50% of 610 =
  5. 5.Best estimate of 28 × 89? (a) 27000 (b) 270 (c) 2700 (d) 5400
  6. 6.1 + 2 + 2 + 9 + 5 =
  7. 7.380 + 39 =
  8. 8.7 + 1 + 9 + 3 =
  9. 9.12 + 54 + 71 + 35 =
  10. 10.Best estimate of 88 × 58? (a) 10800 (b) 5400 (c) 54000 (d) 540
  11. 11.130 − 17 =
  12. 12.6 + 8 + 4 + 8 + 7 =
  13. 13.5% of 160 =
  14. 14.8 + 5 + 6 + 4 + 4 =
  15. 15.Check with nines: 84 × 99 = 8317. Correct or wrong? (a) wrong (b) correct
  16. 16.91² =
  17. 17.65 × 50 =
  18. 18.5% of 720 =
  19. 19.25% of 270 =
  20. 20.180 + 98 =
  21. 21.725 ÷ 5 =
  22. 22.1225 ÷ 25 =
  23. 23.516 − 37 =
  24. 24.4 + 4 + 6 + 6 =
  25. 25.37 × 5 =
  26. 26.1100 ÷ 25 =
  27. 27.20% of 230 =
  28. 28.18 × 15 =
  29. 29.Best estimate of 497 × 5? (a) 25000 (b) 2500 (c) 5000 (d) 250
  30. 30.64 × 50 =
  31. 31.13 × 14 =
  32. 32.44 × 15 =
  33. 33.Best estimate of 89 × 59? (a) 540 (b) 54000 (c) 5400 (d) 10800
  34. 34.132 × 4 =
  35. 35.₹33.10 − ₹26.80 =
  36. 36.74 × 8 =
  37. 37.450 − 47 =
  38. 38.51 × 8 =
  39. 39.750 ÷ 50 =
  40. 40.31² =

Answer key

  1. 12
  2. 2401
  3. 280
  4. 305
  5. 2700
  6. 19
  7. 419
  8. 20
  9. 172
  10. 5400
  11. 113
  12. 33
  13. 8
  14. 27
  15. wrong
  16. 8281
  17. 3250
  18. 36
  19. 67.5
  20. 278
  21. 145
  22. 49
  23. 479
  24. 20
  25. 185
  26. 44
  27. 46
  28. 270
  29. 2500
  30. 3200
  31. 182
  32. 660
  33. 5400
  34. 528
  35. 6.3
  36. 592
  37. 403
  38. 408
  39. 15
  40. 961

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