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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 652 · 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. 1.17 × 17 =
  2. 2.₹10.10 − ₹9.65 =
  3. 3.64 × 15 =
  4. 4.18 × 13 =
  5. 5.40 × 15 =
  6. 6.150 − 37 =
  7. 7.229 + 67 =
  8. 8.29 × 15 =
  9. 9.Best estimate of 38 × 29? (a) 12000 (b) 2400 (c) 120 (d) 1200
  10. 10.150 ÷ 5 =
  11. 11.20 × 8 =
  12. 12.66 × 50 =
  13. 13.63 × 15 =
  14. 14.59 × 4 =
  15. 15.108 − 79 =
  16. 16.91² =
  17. 17.Best estimate of 797 × 8? (a) 640 (b) 12800 (c) 64000 (d) 6400
  18. 18.50 × 15 =
  19. 19.50% of 470 =
  20. 20.2 + 6 + 3 + 7 + 8 =
  21. 21.1 + 9 + 2 + 9 =
  22. 22.101 + 59 =
  23. 23.192 + 27 =
  24. 24.41 + 67 =
  25. 25.Best estimate of 903 × 4? (a) 36000 (b) 7200 (c) 360 (d) 3600
  26. 26.300 ÷ 25 =
  27. 27.79² =
  28. 28.19 × 15 =
  29. 29.15% of 190 =
  30. 30.Best estimate of 199 × 4? (a) 8000 (b) 80 (c) 1600 (d) 800
  31. 31.7 + 8 + 6 + 3 =
  32. 32.Check with nines: 33 × 71 = 2343. Correct or wrong? (a) correct (b) wrong
  33. 33.905 ÷ 5 =
  34. 34.81² =
  35. 35.27 + 21 + 50 + 41 =
  36. 36.16 + 57 + 69 + 34 =
  37. 37.50% of 610 =
  38. 38.28 × 5 =
  39. 39.44 × 50 =
  40. 40.150 − 79 =

Answer key

  1. 289
  2. 0.45
  3. 960
  4. 234
  5. 600
  6. 113
  7. 296
  8. 435
  9. 1200
  10. 30
  11. 160
  12. 3300
  13. 945
  14. 236
  15. 29
  16. 8281
  17. 6400
  18. 750
  19. 235
  20. 26
  21. 21
  22. 160
  23. 219
  24. 108
  25. 3600
  26. 12
  27. 6241
  28. 285
  29. 28.5
  30. 800
  31. 24
  32. correct
  33. 181
  34. 6561
  35. 139
  36. 176
  37. 305
  38. 140
  39. 2200
  40. 71

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