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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 204 · 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. 1.14 × 18 =
  2. 2.Best estimate of 39 × 48? (a) 2000 (b) 20000 (c) 200 (d) 4000
  3. 3.60 + 79 =
  4. 4.51² =
  5. 5.244 − 99 =
  6. 6.6 + 2 + 4 + 8 + 4 =
  7. 7.33 + 52 + 30 + 32 =
  8. 8.22 × 8 =
  9. 9.41 × 50 =
  10. 10.Best estimate of 703 × 5? (a) 350 (b) 3500 (c) 7000 (d) 35000
  11. 11.430 ÷ 5 =
  12. 12.68 × 5 =
  13. 13.7 + 7 + 7 + 4 + 6 =
  14. 14.20 × 15 =
  15. 15.₹89.75 − ₹28.50 =
  16. 16.₹26.60 − ₹5.05 =
  17. 17.341 + 57 =
  18. 18.518 − 36 =
  19. 19.10% of 140 =
  20. 20.31 + 86 + 64 + 11 =
  21. 21.71 × 50 =
  22. 22.Check with nines: 868 + 423 = 1292. Correct or wrong? (a) wrong (b) correct
  23. 23.32 × 8 =
  24. 24.₹23.30 + ₹4.10 =
  25. 25.325 ÷ 25 =
  26. 26.17 × 16 =
  27. 27.2 + 8 + 9 + 2 + 8 =
  28. 28.16 + 41 + 88 + 16 =
  29. 29.4 + 8 + 9 + 6 =
  30. 30.150 ÷ 50 =
  31. 31.42 × 8 =
  32. 32.359 + 19 =
  33. 33.950 ÷ 25 =
  34. 34.167 − 37 =
  35. 35.45 × 15 =
  36. 36.25% of 800 =
  37. 37.39 × 15 =
  38. 38.7 + 9 + 5 + 5 + 5 =
  39. 39.157 − 77 =
  40. 40.305 − 57 =

Answer key

  1. 252
  2. 2000
  3. 139
  4. 2601
  5. 145
  6. 24
  7. 147
  8. 176
  9. 2050
  10. 3500
  11. 86
  12. 340
  13. 31
  14. 300
  15. 61.25
  16. 21.55
  17. 398
  18. 482
  19. 14
  20. 192
  21. 3550
  22. wrong
  23. 256
  24. 27.4
  25. 13
  26. 272
  27. 29
  28. 161
  29. 27
  30. 3
  31. 336
  32. 378
  33. 38
  34. 130
  35. 675
  36. 200
  37. 585
  38. 31
  39. 80
  40. 248

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