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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 176 · 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.₹13.35 − ₹9.15 =
  2. 2.41 × 4 =
  3. 3.474 − 49 =
  4. 4.121 − 68 =
  5. 5.490 + 88 =
  6. 6.25 × 5 =
  7. 7.142 − 68 =
  8. 8.91² =
  9. 9.54 + 71 + 30 + 58 =
  10. 10.₹39.10 + ₹10.65 =
  11. 11.29 × 8 =
  12. 12.54 × 15 =
  13. 13.Check with nines: 19 × 49 = 936. Correct or wrong? (a) correct (b) wrong
  14. 14.12 × 15 =
  15. 15.Check with nines: 44 × 30 = 1326. Correct or wrong? (a) correct (b) wrong
  16. 16.₹16.75 + ₹26.45 =
  17. 17.1000 ÷ 25 =
  18. 18.₹69.25 − ₹39.05 =
  19. 19.15 × 19 =
  20. 20.13 × 13 =
  21. 21.369 + 47 =
  22. 22.23 × 8 =
  23. 23.₹83.20 + ₹47.80 =
  24. 24.48 × 5 =
  25. 25.284 − 36 =
  26. 26.5 + 5 + 5 + 4 =
  27. 27.20% of 690 =
  28. 28.6 + 5 + 4 + 9 + 6 =
  29. 29.37 × 15 =
  30. 30.1275 ÷ 25 =
  31. 31.1000 ÷ 25 =
  32. 32.16 × 15 =
  33. 33.130 + 48 =
  34. 34.Check with nines: 93 × 27 = 2511. Correct or wrong? (a) wrong (b) correct
  35. 35.218 − 58 =
  36. 36.31² =
  37. 37.29² =
  38. 38.15% of 270 =
  39. 39.Check with nines: 36 × 59 = 2128. Correct or wrong? (a) wrong (b) correct
  40. 40.36 × 5 =

Answer key

  1. 4.2
  2. 164
  3. 425
  4. 53
  5. 578
  6. 125
  7. 74
  8. 8281
  9. 213
  10. 49.75
  11. 232
  12. 810
  13. wrong
  14. 180
  15. wrong
  16. 43.2
  17. 40
  18. 30.2
  19. 285
  20. 169
  21. 416
  22. 184
  23. 131
  24. 240
  25. 248
  26. 19
  27. 138
  28. 30
  29. 555
  30. 51
  31. 40
  32. 240
  33. 178
  34. correct
  35. 160
  36. 961
  37. 841
  38. 40.5
  39. wrong
  40. 180

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