← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 315 · 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. 1.105 ÷ 5 =
  2. 2.71² =
  3. 3.24 × 8 =
  4. 4.Check with nines: 30 × 27 = 802. Correct or wrong? (a) correct (b) wrong
  5. 5.650 ÷ 25 =
  6. 6.77 × 50 =
  7. 7.Best estimate of 799 × 4? (a) 320 (b) 6400 (c) 3200 (d) 32000
  8. 8.188 + 99 =
  9. 9.8 + 2 + 8 + 1 + 1 =
  10. 10.1700 ÷ 50 =
  11. 11.20% of 340 =
  12. 12.16 × 5 =
  13. 13.97 − 79 =
  14. 14.Check with nines: 961 + 513 = 1478. Correct or wrong? (a) wrong (b) correct
  15. 15.59 × 15 =
  16. 16.10% of 850 =
  17. 17.Best estimate of 62 × 71? (a) 42000 (b) 4200 (c) 8400 (d) 420
  18. 18.31 × 15 =
  19. 19.23 × 15 =
  20. 20.19² =
  21. 21.117 − 98 =
  22. 22.5 + 5 + 3 + 5 + 3 =
  23. 23.25 × 4 =
  24. 24.₹91.85 + ₹28.95 =
  25. 25.62 × 5 =
  26. 26.Check with nines: 24 × 51 = 1224. Correct or wrong? (a) wrong (b) correct
  27. 27.10% of 180 =
  28. 28.284 − 78 =
  29. 29.₹85.50 + ₹35.30 =
  30. 30.409 + 47 =
  31. 31.9 + 4 + 1 + 5 =
  32. 32.79 + 47 =
  33. 33.11 × 16 =
  34. 34.48 × 15 =
  35. 35.156 × 4 =
  36. 36.₹18.30 + ₹19.60 =
  37. 37.89 + 40 + 76 + 52 =
  38. 38.317 − 29 =
  39. 39.79² =
  40. 40.4 + 5 + 8 + 6 =

Answer key

  1. 21
  2. 5041
  3. 192
  4. wrong
  5. 26
  6. 3850
  7. 3200
  8. 287
  9. 20
  10. 34
  11. 68
  12. 80
  13. 18
  14. wrong
  15. 885
  16. 85
  17. 4200
  18. 465
  19. 345
  20. 361
  21. 19
  22. 21
  23. 100
  24. 120.8
  25. 310
  26. correct
  27. 18
  28. 206
  29. 120.8
  30. 456
  31. 19
  32. 126
  33. 176
  34. 720
  35. 624
  36. 37.9
  37. 257
  38. 288
  39. 6241
  40. 23

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