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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 143 · 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. 1.55 × 50 =
  2. 2.955 ÷ 5 =
  3. 3.Check with nines: 15 × 35 = 525. Correct or wrong? (a) wrong (b) correct
  4. 4.438 + 88 =
  5. 5.27 × 15 =
  6. 6.1600 ÷ 50 =
  7. 7.38 × 4 =
  8. 8.540 − 36 =
  9. 9.20% of 760 =
  10. 10.Check with nines: 14 × 80 = 1116. Correct or wrong? (a) correct (b) wrong
  11. 11.15 × 11 =
  12. 12.31 + 17 =
  13. 13.77 × 5 =
  14. 14.64 × 15 =
  15. 15.46 × 15 =
  16. 16.73 × 4 =
  17. 17.18 × 15 =
  18. 18.14 × 13 =
  19. 19.60 + 89 + 58 + 22 =
  20. 20.4 + 5 + 8 + 2 =
  21. 21.₹75.70 − ₹29.45 =
  22. 22.25% of 320 =
  23. 23.30 × 50 =
  24. 24.39² =
  25. 25.15 + 71 + 74 + 29 =
  26. 26.Best estimate of 199 × 9? (a) 3600 (b) 180 (c) 18000 (d) 1800
  27. 27.453 + 97 =
  28. 28.252 + 57 =
  29. 29.1% of 320 =
  30. 30.45 × 8 =
  31. 31.69² =
  32. 32.313 − 67 =
  33. 33.5% of 580 =
  34. 34.29 + 49 =
  35. 35.Best estimate of 89 × 48? (a) 450 (b) 9000 (c) 4500 (d) 45000
  36. 36.13 × 15 =
  37. 37.483 − 78 =
  38. 38.63 × 15 =
  39. 39.19² =
  40. 40.5 × 15 =

Answer key

  1. 2750
  2. 191
  3. correct
  4. 526
  5. 405
  6. 32
  7. 152
  8. 504
  9. 152
  10. wrong
  11. 165
  12. 48
  13. 385
  14. 960
  15. 690
  16. 292
  17. 270
  18. 182
  19. 229
  20. 19
  21. 46.25
  22. 80
  23. 1500
  24. 1521
  25. 189
  26. 1800
  27. 550
  28. 309
  29. 3.2
  30. 360
  31. 4761
  32. 246
  33. 29
  34. 78
  35. 4500
  36. 195
  37. 405
  38. 945
  39. 361
  40. 75

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