← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 432 · 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. 1.69² =
  2. 2.309 − 27 =
  3. 3.1 + 9 + 4 + 7 =
  4. 4.Check with nines: 611 + 265 = 876. Correct or wrong? (a) correct (b) wrong
  5. 5.43 × 15 =
  6. 6.11 × 12 =
  7. 7.Best estimate of 702 × 3? (a) 210 (b) 21000 (c) 2100 (d) 4200
  8. 8.226 − 59 =
  9. 9.20 × 4 =
  10. 10.15 × 8 =
  11. 11.₹33.85 + ₹24.80 =
  12. 12.37 + 78 =
  13. 13.18 + 72 + 73 + 88 =
  14. 14.Best estimate of 59 × 49? (a) 6000 (b) 3000 (c) 30000 (d) 300
  15. 15.41 + 61 + 71 + 38 =
  16. 16.16 × 19 =
  17. 17.90 × 5 =
  18. 18.Check with nines: 802 + 890 = 1690. Correct or wrong? (a) wrong (b) correct
  19. 19.31² =
  20. 20.3 + 2 + 8 + 1 + 3 =
  21. 21.31² =
  22. 22.850 ÷ 25 =
  23. 23.466 + 88 =
  24. 24.388 − 96 =
  25. 25.39 × 4 =
  26. 26.8 + 2 + 4 + 3 + 8 =
  27. 27.53 × 4 =
  28. 28.54 + 55 + 82 + 11 =
  29. 29.9 + 8 + 9 + 1 + 5 =
  30. 30.100 + 17 =
  31. 31.19 × 5 =
  32. 32.1% of 380 =
  33. 33.163 + 47 =
  34. 34.8 × 15 =
  35. 35.Best estimate of 39 × 41? (a) 16000 (b) 3200 (c) 160 (d) 1600
  36. 36.290 − 69 =
  37. 37.8 + 2 + 3 + 6 =
  38. 38.56 × 8 =
  39. 39.40 × 15 =
  40. 40.5% of 20 =

Answer key

  1. 4761
  2. 282
  3. 21
  4. correct
  5. 645
  6. 132
  7. 2100
  8. 167
  9. 80
  10. 120
  11. 58.65
  12. 115
  13. 251
  14. 3000
  15. 211
  16. 304
  17. 450
  18. wrong
  19. 961
  20. 17
  21. 961
  22. 34
  23. 554
  24. 292
  25. 156
  26. 25
  27. 212
  28. 202
  29. 32
  30. 117
  31. 95
  32. 3.8
  33. 210
  34. 120
  35. 1600
  36. 221
  37. 19
  38. 448
  39. 600
  40. 1

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