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Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 623 · 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. 1.6 × 15 =
  2. 2.393 + 88 =
  3. 3.1150 ÷ 50 =
  4. 4.Check with nines: 39 × 23 = 889. Correct or wrong? (a) correct (b) wrong
  5. 5.358 − 96 =
  6. 6.32 + 37 =
  7. 7.₹33.85 − ₹13.05 =
  8. 8.140 + 58 =
  9. 9.19² =
  10. 10.₹26.90 − ₹18.70 =
  11. 11.437 + 67 =
  12. 12.590 ÷ 5 =
  13. 13.89² =
  14. 14.233 − 28 =
  15. 15.2 + 2 + 8 + 9 =
  16. 16.12 × 11 =
  17. 17.3 + 7 + 6 + 8 + 7 =
  18. 18.137 × 4 =
  19. 19.167 + 97 =
  20. 20.83 × 5 =
  21. 21.59 × 5 =
  22. 22.44 + 47 + 61 + 56 =
  23. 23.25 + 77 + 53 + 36 =
  24. 24.₹70.65 + ₹5.60 =
  25. 25.50 + 61 + 33 + 47 =
  26. 26.63 × 15 =
  27. 27.6 + 7 + 9 + 3 + 4 =
  28. 28.25% of 290 =
  29. 29.66 + 66 + 14 + 63 =
  30. 30.42 + 27 + 25 + 57 =
  31. 31.250 − 67 =
  32. 32.7 + 4 + 8 + 2 =
  33. 33.Best estimate of 52 × 29? (a) 15000 (b) 3000 (c) 150 (d) 1500
  34. 34.28 + 83 + 12 + 25 =
  35. 35.51 × 15 =
  36. 36.45 × 5 =
  37. 37.63 × 8 =
  38. 38.233 − 47 =
  39. 39.7 × 15 =
  40. 40.282 − 29 =

Answer key

  1. 90
  2. 481
  3. 23
  4. wrong
  5. 262
  6. 69
  7. 20.8
  8. 198
  9. 361
  10. 8.2
  11. 504
  12. 118
  13. 7921
  14. 205
  15. 21
  16. 132
  17. 31
  18. 548
  19. 264
  20. 415
  21. 295
  22. 208
  23. 191
  24. 76.25
  25. 191
  26. 945
  27. 29
  28. 72.5
  29. 209
  30. 151
  31. 183
  32. 21
  33. 1500
  34. 148
  35. 765
  36. 225
  37. 504
  38. 186
  39. 105
  40. 253

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