← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 503 · 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. 1.39² =
  2. 2.276 + 87 =
  3. 3.Best estimate of 78 × 52? (a) 400 (b) 40000 (c) 8000 (d) 4000
  4. 4.37 × 5 =
  5. 5.17 × 16 =
  6. 6.28 × 4 =
  7. 7.56 × 15 =
  8. 8.₹88.05 + ₹12.85 =
  9. 9.425 − 79 =
  10. 10.68 + 62 + 20 + 30 =
  11. 11.700 ÷ 50 =
  12. 12.49² =
  13. 13.9 + 1 + 1 + 7 + 7 =
  14. 14.Best estimate of 59 × 72? (a) 8400 (b) 4200 (c) 42000 (d) 420
  15. 15.₹41.40 − ₹20.65 =
  16. 16.592 − 38 =
  17. 17.49 × 4 =
  18. 18.39² =
  19. 19.21 × 15 =
  20. 20.85 × 4 =
  21. 21.381 + 97 =
  22. 22.6 + 3 + 7 + 2 =
  23. 23.1 + 9 + 8 + 9 + 3 =
  24. 24.67 + 15 + 29 + 61 =
  25. 25.40 × 5 =
  26. 26.550 ÷ 5 =
  27. 27.100 − 36 =
  28. 28.149 + 77 =
  29. 29.725 ÷ 25 =
  30. 30.565 − 78 =
  31. 31.81² =
  32. 32.5% of 830 =
  33. 33.283 − 56 =
  34. 34.482 − 17 =
  35. 35.700 ÷ 50 =
  36. 36.81² =
  37. 37.71 + 17 + 52 + 28 =
  38. 38.Check with nines: 502 + 477 = 979. Correct or wrong? (a) wrong (b) correct
  39. 39.13 × 14 =
  40. 40.438 − 46 =

Answer key

  1. 1521
  2. 363
  3. 4000
  4. 185
  5. 272
  6. 112
  7. 840
  8. 100.9
  9. 346
  10. 180
  11. 14
  12. 2401
  13. 25
  14. 4200
  15. 20.75
  16. 554
  17. 196
  18. 1521
  19. 315
  20. 340
  21. 478
  22. 18
  23. 30
  24. 172
  25. 200
  26. 110
  27. 64
  28. 226
  29. 29
  30. 487
  31. 6561
  32. 41.5
  33. 227
  34. 465
  35. 14
  36. 6561
  37. 168
  38. correct
  39. 182
  40. 392

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