← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 480 · 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.Best estimate of 702 × 8? (a) 56000 (b) 5600 (c) 11200 (d) 560
  2. 2.₹22.70 − ₹13.75 =
  3. 3.24 + 16 + 61 + 56 =
  4. 4.₹19.40 + ₹8.50 =
  5. 5.Best estimate of 51 × 18? (a) 100 (b) 2000 (c) 10000 (d) 1000
  6. 6.59 + 56 + 41 + 29 =
  7. 7.25% of 270 =
  8. 8.50 × 5 =
  9. 9.89² =
  10. 10.28 + 80 + 60 + 29 =
  11. 11.68 × 5 =
  12. 12.26 + 88 + 37 + 19 =
  13. 13.20% of 680 =
  14. 14.491 + 27 =
  15. 15.5% of 420 =
  16. 16.₹72.45 + ₹33.40 =
  17. 17.9 + 8 + 2 + 4 =
  18. 18.19 × 19 =
  19. 19.65 + 71 + 67 + 53 =
  20. 20.27 × 5 =
  21. 21.585 − 37 =
  22. 22.88 + 61 + 61 + 71 =
  23. 23.9 + 2 + 1 + 8 =
  24. 24.₹49.25 − ₹25.50 =
  25. 25.40 × 15 =
  26. 26.₹40.20 + ₹36.05 =
  27. 27.361 − 68 =
  28. 28.650 ÷ 50 =
  29. 29.256 + 69 =
  30. 30.2 + 5 + 7 + 6 + 3 =
  31. 31.15 × 15 =
  32. 32.59 × 15 =
  33. 33.19 × 50 =
  34. 34.1% of 630 =
  35. 35.Best estimate of 598 × 5? (a) 300 (b) 30000 (c) 3000 (d) 6000
  36. 36.8 + 6 + 7 + 3 + 9 =
  37. 37.39 × 15 =
  38. 38.17 × 50 =
  39. 39.13 × 11 =
  40. 40.Check with nines: 96 × 49 = 4704. Correct or wrong? (a) correct (b) wrong

Answer key

  1. 5600
  2. 8.95
  3. 157
  4. 27.9
  5. 1000
  6. 185
  7. 67.5
  8. 250
  9. 7921
  10. 197
  11. 340
  12. 170
  13. 136
  14. 518
  15. 21
  16. 105.85
  17. 23
  18. 361
  19. 256
  20. 135
  21. 548
  22. 281
  23. 20
  24. 23.75
  25. 600
  26. 76.25
  27. 293
  28. 13
  29. 325
  30. 23
  31. 225
  32. 885
  33. 950
  34. 6.3
  35. 3000
  36. 33
  37. 585
  38. 850
  39. 143
  40. correct

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