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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 494 · 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.Check with nines: 15 × 20 = 298. Correct or wrong? (a) correct (b) wrong
  2. 2.28 × 15 =
  3. 3.1700 ÷ 50 =
  4. 4.19 × 16 =
  5. 5.3 + 5 + 1 + 8 + 7 =
  6. 6.17 × 11 =
  7. 7.31² =
  8. 8.19 × 11 =
  9. 9.4 × 15 =
  10. 10.46 + 36 + 60 + 77 =
  11. 11.427 + 48 =
  12. 12.96 × 50 =
  13. 13.₹94.80 + ₹5.30 =
  14. 14.₹89.10 − ₹3.85 =
  15. 15.2 + 3 + 8 + 7 =
  16. 16.117 × 4 =
  17. 17.49 + 14 + 26 + 33 =
  18. 18.345 ÷ 5 =
  19. 19.41² =
  20. 20.19² =
  21. 21.Best estimate of 97 × 5? (a) 5000 (b) 50 (c) 1000 (d) 500
  22. 22.68 + 35 + 29 + 87 =
  23. 23.19 × 12 =
  24. 24.₹35.05 − ₹18.20 =
  25. 25.37 × 15 =
  26. 26.22 + 42 + 12 + 31 =
  27. 27.61 × 4 =
  28. 28.₹48.10 − ₹45.25 =
  29. 29.96 + 99 =
  30. 30.₹51.85 + ₹47.25 =
  31. 31.₹32.80 − ₹20.75 =
  32. 32.386 + 88 =
  33. 33.14 × 17 =
  34. 34.16 × 19 =
  35. 35.425 ÷ 25 =
  36. 36.7 + 7 + 2 + 4 + 8 =
  37. 37.126 + 27 =
  38. 38.47 × 15 =
  39. 39.158 + 77 =
  40. 40.1 + 3 + 2 + 7 + 1 =

Answer key

  1. wrong
  2. 420
  3. 34
  4. 304
  5. 24
  6. 187
  7. 961
  8. 209
  9. 60
  10. 219
  11. 475
  12. 4800
  13. 100.1
  14. 85.25
  15. 20
  16. 468
  17. 122
  18. 69
  19. 1681
  20. 361
  21. 500
  22. 219
  23. 228
  24. 16.85
  25. 555
  26. 107
  27. 244
  28. 2.85
  29. 195
  30. 99.1
  31. 12.05
  32. 474
  33. 238
  34. 304
  35. 17
  36. 28
  37. 153
  38. 705
  39. 235
  40. 14

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