← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 923 · 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. 1.11 × 15 =
  2. 2.Best estimate of 599 × 8? (a) 4800 (b) 9600 (c) 480 (d) 48000
  3. 3.42 × 15 =
  4. 4.39 × 15 =
  5. 5.2 + 9 + 5 + 2 + 8 =
  6. 6.25% of 570 =
  7. 7.₹52.90 − ₹46.15 =
  8. 8.129 − 79 =
  9. 9.48 × 15 =
  10. 10.189 − 29 =
  11. 11.Best estimate of 42 × 39? (a) 16000 (b) 160 (c) 1600 (d) 3200
  12. 12.218 − 56 =
  13. 13.3 + 8 + 2 + 9 =
  14. 14.249 − 28 =
  15. 15.1000 ÷ 50 =
  16. 16.176 − 26 =
  17. 17.4 + 3 + 6 + 8 =
  18. 18.Best estimate of 302 × 6? (a) 1800 (b) 18000 (c) 180 (d) 3600
  19. 19.1500 ÷ 50 =
  20. 20.20% of 110 =
  21. 21.305 − 39 =
  22. 22.8 + 8 + 2 + 4 =
  23. 23.915 ÷ 5 =
  24. 24.102 × 4 =
  25. 25.495 ÷ 5 =
  26. 26.64 × 50 =
  27. 27.47 + 58 + 33 + 33 =
  28. 28.39² =
  29. 29.₹90.40 − ₹15.25 =
  30. 30.₹94.35 − ₹34.95 =
  31. 31.965 ÷ 5 =
  32. 32.55 × 8 =
  33. 33.5% of 170 =
  34. 34.Best estimate of 501 × 6? (a) 30000 (b) 6000 (c) 300 (d) 3000
  35. 35.45 + 74 + 31 + 66 =
  36. 36.51² =
  37. 37.1 + 9 + 6 + 6 =
  38. 38.21 × 15 =
  39. 39.100 ÷ 25 =
  40. 40.326 − 58 =

Answer key

  1. 165
  2. 4800
  3. 630
  4. 585
  5. 26
  6. 142.5
  7. 6.75
  8. 50
  9. 720
  10. 160
  11. 1600
  12. 162
  13. 22
  14. 221
  15. 20
  16. 150
  17. 21
  18. 1800
  19. 30
  20. 22
  21. 266
  22. 22
  23. 183
  24. 408
  25. 99
  26. 3200
  27. 171
  28. 1521
  29. 75.15
  30. 59.4
  31. 193
  32. 440
  33. 8.5
  34. 3000
  35. 216
  36. 2601
  37. 22
  38. 315
  39. 4
  40. 268

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