← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 74 · 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. 1.73 + 48 =
  2. 2.₹80.80 + ₹11.95 =
  3. 3.₹46.60 − ₹40.40 =
  4. 4.15 + 60 + 32 + 83 =
  5. 5.5 × 15 =
  6. 6.16 + 18 + 28 + 57 =
  7. 7.Best estimate of 72 × 48? (a) 350 (b) 3500 (c) 35000 (d) 7000
  8. 8.241 − 69 =
  9. 9.40 + 77 + 15 + 19 =
  10. 10.296 + 79 =
  11. 11.10% of 640 =
  12. 12.5% of 850 =
  13. 13.11 × 15 =
  14. 14.37 × 5 =
  15. 15.414 − 17 =
  16. 16.86 × 4 =
  17. 17.505 − 28 =
  18. 18.₹49.35 − ₹31.45 =
  19. 19.465 − 18 =
  20. 20.Best estimate of 898 × 4? (a) 36000 (b) 7200 (c) 360 (d) 3600
  21. 21.20 + 81 + 74 + 36 =
  22. 22.3 + 1 + 9 + 3 =
  23. 23.11 × 15 =
  24. 24.256 + 68 =
  25. 25.10% of 90 =
  26. 26.449 − 29 =
  27. 27.15 × 15 =
  28. 28.Best estimate of 203 × 3? (a) 1200 (b) 6000 (c) 60 (d) 600
  29. 29.58 + 72 + 44 + 77 =
  30. 30.19² =
  31. 31.400 ÷ 25 =
  32. 32.91² =
  33. 33.640 ÷ 5 =
  34. 34.₹26.85 − ₹4.45 =
  35. 35.1 + 4 + 8 + 9 =
  36. 36.384 − 96 =
  37. 37.150 × 4 =
  38. 38.Check with nines: 906 + 254 = 1168. Correct or wrong? (a) wrong (b) correct
  39. 39.₹82.70 + ₹45.65 =
  40. 40.15% of 380 =

Answer key

  1. 121
  2. 92.75
  3. 6.2
  4. 190
  5. 75
  6. 119
  7. 3500
  8. 172
  9. 151
  10. 375
  11. 64
  12. 42.5
  13. 165
  14. 185
  15. 397
  16. 344
  17. 477
  18. 17.9
  19. 447
  20. 3600
  21. 211
  22. 16
  23. 165
  24. 324
  25. 9
  26. 420
  27. 225
  28. 600
  29. 251
  30. 361
  31. 16
  32. 8281
  33. 128
  34. 22.4
  35. 22
  36. 288
  37. 600
  38. wrong
  39. 128.35
  40. 57

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