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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 304 · 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. 1.25 × 8 =
  2. 2.5% of 50 =
  3. 3.131 + 19 =
  4. 4.179 + 19 =
  5. 5.384 − 48 =
  6. 6.69² =
  7. 7.91² =
  8. 8.470 − 37 =
  9. 9.₹35.75 − ₹23.60 =
  10. 10.Best estimate of 58 × 81? (a) 48000 (b) 480 (c) 9600 (d) 4800
  11. 11.226 + 67 =
  12. 12.2 + 4 + 2 + 6 + 6 =
  13. 13.10% of 650 =
  14. 14.25% of 620 =
  15. 15.59 × 15 =
  16. 16.40 + 75 + 63 + 65 =
  17. 17.₹34.95 − ₹16.60 =
  18. 18.125 + 17 =
  19. 19.575 ÷ 25 =
  20. 20.101 − 56 =
  21. 21.Check with nines: 128 + 849 = 977. Correct or wrong? (a) wrong (b) correct
  22. 22.42 × 50 =
  23. 23.1300 ÷ 50 =
  24. 24.17 × 15 =
  25. 25.54 × 50 =
  26. 26.470 − 59 =
  27. 27.31² =
  28. 28.9 + 7 + 3 + 7 =
  29. 29.394 − 36 =
  30. 30.Check with nines: 46 × 30 = 1380. Correct or wrong? (a) wrong (b) correct
  31. 31.75 ÷ 5 =
  32. 32.5% of 630 =
  33. 33.28 × 15 =
  34. 34.₹22.25 − ₹17.10 =
  35. 35.77 × 5 =
  36. 36.2 + 8 + 1 + 5 + 9 =
  37. 37.29² =
  38. 38.350 ÷ 25 =
  39. 39.45 × 5 =
  40. 40.22 × 4 =

Answer key

  1. 200
  2. 2.5
  3. 150
  4. 198
  5. 336
  6. 4761
  7. 8281
  8. 433
  9. 12.15
  10. 4800
  11. 293
  12. 20
  13. 65
  14. 155
  15. 885
  16. 243
  17. 18.35
  18. 142
  19. 23
  20. 45
  21. correct
  22. 2100
  23. 26
  24. 255
  25. 2700
  26. 411
  27. 961
  28. 26
  29. 358
  30. correct
  31. 15
  32. 31.5
  33. 420
  34. 5.15
  35. 385
  36. 25
  37. 841
  38. 14
  39. 225
  40. 88

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