← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 110 · 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 × 16 =
  2. 2.Best estimate of 598 × 8? (a) 9600 (b) 480 (c) 4800 (d) 48000
  3. 3.₹44.35 − ₹35.40 =
  4. 4.139 × 4 =
  5. 5.25% of 850 =
  6. 6.40 × 4 =
  7. 7.141 + 37 =
  8. 8.1% of 260 =
  9. 9.21² =
  10. 10.567 − 59 =
  11. 11.470 ÷ 5 =
  12. 12.91 × 5 =
  13. 13.Best estimate of 22 × 21? (a) 4000 (b) 400 (c) 800 (d) 40
  14. 14.Check with nines: 98 × 68 = 6672. Correct or wrong? (a) correct (b) wrong
  15. 15.70 + 40 + 87 + 75 =
  16. 16.28 × 15 =
  17. 17.₹90.80 + ₹49.60 =
  18. 18.89 + 59 =
  19. 19.78 + 49 =
  20. 20.193 + 19 =
  21. 21.36 + 64 + 37 + 86 =
  22. 22.500 ÷ 25 =
  23. 23.96 + 17 =
  24. 24.Check with nines: 17 × 52 = 884. Correct or wrong? (a) wrong (b) correct
  25. 25.49² =
  26. 26.72 × 50 =
  27. 27.30 × 15 =
  28. 28.11 × 18 =
  29. 29.300 ÷ 5 =
  30. 30.7 × 15 =
  31. 31.Best estimate of 21 × 52? (a) 1000 (b) 2000 (c) 10000 (d) 100
  32. 32.38 + 23 + 78 + 52 =
  33. 33.39² =
  34. 34.1 + 2 + 5 + 9 + 8 =
  35. 35.47 × 15 =
  36. 36.115 + 99 =
  37. 37.530 − 67 =
  38. 38.2 + 9 + 3 + 7 =
  39. 39.2 + 1 + 8 + 1 + 9 =
  40. 40.186 + 99 =

Answer key

  1. 176
  2. 4800
  3. 8.95
  4. 556
  5. 212.5
  6. 160
  7. 178
  8. 2.6
  9. 441
  10. 508
  11. 94
  12. 455
  13. 400
  14. wrong
  15. 272
  16. 420
  17. 140.4
  18. 148
  19. 127
  20. 212
  21. 223
  22. 20
  23. 113
  24. correct
  25. 2401
  26. 3600
  27. 450
  28. 198
  29. 60
  30. 105
  31. 1000
  32. 191
  33. 1521
  34. 25
  35. 705
  36. 214
  37. 463
  38. 21
  39. 21
  40. 285

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