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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 916 · 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. 1.23 × 8 =
  2. 2.Best estimate of 898 × 8? (a) 14400 (b) 720 (c) 7200 (d) 72000
  3. 3.₹71.85 − ₹39.95 =
  4. 4.335 + 18 =
  5. 5.7 + 4 + 7 + 6 + 3 =
  6. 6.21 × 8 =
  7. 7.58 × 4 =
  8. 8.151 − 16 =
  9. 9.272 + 67 =
  10. 10.3 + 1 + 8 + 9 + 9 =
  11. 11.8 + 2 + 7 + 4 =
  12. 12.359 − 36 =
  13. 13.31² =
  14. 14.72 × 5 =
  15. 15.Best estimate of 69 × 41? (a) 280 (b) 28000 (c) 2800 (d) 5600
  16. 16.79² =
  17. 17.47 × 15 =
  18. 18.20 + 42 + 25 + 21 =
  19. 19.14 × 4 =
  20. 20.730 ÷ 5 =
  21. 21.4 + 2 + 2 + 6 =
  22. 22.44 + 24 + 33 + 50 =
  23. 23.59² =
  24. 24.400 ÷ 25 =
  25. 25.12 × 18 =
  26. 26.91 − 88 =
  27. 27.387 + 97 =
  28. 28.6 + 3 + 3 + 7 + 1 =
  29. 29.Best estimate of 88 × 21? (a) 3600 (b) 180 (c) 1800 (d) 18000
  30. 30.Best estimate of 29 × 68? (a) 4200 (b) 2100 (c) 21000 (d) 210
  31. 31.Best estimate of 403 × 8? (a) 6400 (b) 32000 (c) 320 (d) 3200
  32. 32.Best estimate of 303 × 9? (a) 270 (b) 5400 (c) 2700 (d) 27000
  33. 33.14 × 14 =
  34. 34.53 × 15 =
  35. 35.₹49.65 − ₹36.25 =
  36. 36.66 × 8 =
  37. 37.18 × 12 =
  38. 38.33 × 15 =
  39. 39.₹37.90 − ₹32.85 =
  40. 40.10% of 250 =

Answer key

  1. 184
  2. 7200
  3. 31.9
  4. 353
  5. 27
  6. 168
  7. 232
  8. 135
  9. 339
  10. 30
  11. 21
  12. 323
  13. 961
  14. 360
  15. 2800
  16. 6241
  17. 705
  18. 108
  19. 56
  20. 146
  21. 14
  22. 151
  23. 3481
  24. 16
  25. 216
  26. 3
  27. 484
  28. 20
  29. 1800
  30. 2100
  31. 3200
  32. 2700
  33. 196
  34. 795
  35. 13.4
  36. 528
  37. 216
  38. 495
  39. 5.05
  40. 25

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