← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 244 · 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. 1.475 ÷ 25 =
  2. 2.17 × 17 =
  3. 3.57 − 26 =
  4. 4.50% of 230 =
  5. 5.22 × 8 =
  6. 6.83 × 5 =
  7. 7.Check with nines: 72 × 81 = 5824. Correct or wrong? (a) correct (b) wrong
  8. 8.15 × 15 =
  9. 9.Check with nines: 27 × 24 = 655. Correct or wrong? (a) wrong (b) correct
  10. 10.204 − 78 =
  11. 11.7 + 8 + 2 + 6 =
  12. 12.266 + 38 =
  13. 13.1000 ÷ 50 =
  14. 14.7 + 2 + 5 + 3 =
  15. 15.550 ÷ 50 =
  16. 16.93 × 4 =
  17. 17.Best estimate of 31 × 42? (a) 120 (b) 12000 (c) 2400 (d) 1200
  18. 18.30 + 26 + 61 + 52 =
  19. 19.52 × 15 =
  20. 20.Best estimate of 72 × 39? (a) 5600 (b) 2800 (c) 28000 (d) 280
  21. 21.12 × 11 =
  22. 22.38 × 8 =
  23. 23.15 × 11 =
  24. 24.14 × 11 =
  25. 25.89² =
  26. 26.56 × 15 =
  27. 27.₹57.70 + ₹16.90 =
  28. 28.3 + 8 + 1 + 2 =
  29. 29.6 + 8 + 5 + 2 + 7 =
  30. 30.4 × 15 =
  31. 31.19² =
  32. 32.4 + 6 + 6 + 6 + 4 =
  33. 33.119 × 4 =
  34. 34.46 × 15 =
  35. 35.48 × 8 =
  36. 36.141 + 39 =
  37. 37.38 × 4 =
  38. 38.371 + 18 =
  39. 39.59² =
  40. 40.69 × 4 =

Answer key

  1. 19
  2. 289
  3. 31
  4. 115
  5. 176
  6. 415
  7. wrong
  8. 225
  9. wrong
  10. 126
  11. 23
  12. 304
  13. 20
  14. 17
  15. 11
  16. 372
  17. 1200
  18. 169
  19. 780
  20. 2800
  21. 132
  22. 304
  23. 165
  24. 154
  25. 7921
  26. 840
  27. 74.6
  28. 14
  29. 28
  30. 60
  31. 361
  32. 26
  33. 476
  34. 690
  35. 384
  36. 180
  37. 152
  38. 389
  39. 3481
  40. 276

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths