← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 186 · 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.Best estimate of 42 × 69? (a) 28000 (b) 5600 (c) 2800 (d) 280
  2. 2.1% of 110 =
  3. 3.Best estimate of 29 × 49? (a) 15000 (b) 150 (c) 1500 (d) 3000
  4. 4.57 × 15 =
  5. 5.7 + 8 + 3 + 3 =
  6. 6.20 × 8 =
  7. 7.1% of 440 =
  8. 8.11 × 11 =
  9. 9.122 − 99 =
  10. 10.Best estimate of 39 × 78? (a) 6400 (b) 32000 (c) 320 (d) 3200
  11. 11.61 × 15 =
  12. 12.11 × 16 =
  13. 13.22 × 5 =
  14. 14.598 − 48 =
  15. 15.26 × 8 =
  16. 16.332 − 29 =
  17. 17.Check with nines: 51 × 13 = 663. Correct or wrong? (a) correct (b) wrong
  18. 18.71 + 32 + 47 + 75 =
  19. 19.524 − 76 =
  20. 20.4 + 5 + 1 + 8 + 9 =
  21. 21.82 + 36 + 84 + 65 =
  22. 22.49² =
  23. 23.50% of 650 =
  24. 24.₹34.90 − ₹10.65 =
  25. 25.16 × 15 =
  26. 26.25% of 540 =
  27. 27.₹87.90 + ₹41.25 =
  28. 28.61² =
  29. 29.70 + 80 + 51 + 11 =
  30. 30.173 − 88 =
  31. 31.5 + 2 + 7 + 8 =
  32. 32.49 × 15 =
  33. 33.12 × 15 =
  34. 34.353 − 29 =
  35. 35.241 + 97 =
  36. 36.586 − 69 =
  37. 37.Best estimate of 702 × 4? (a) 2800 (b) 280 (c) 28000 (d) 5600
  38. 38.168 + 19 =
  39. 39.13 × 11 =
  40. 40.1% of 240 =

Answer key

  1. 2800
  2. 1.1
  3. 1500
  4. 855
  5. 21
  6. 160
  7. 4.4
  8. 121
  9. 23
  10. 3200
  11. 915
  12. 176
  13. 110
  14. 550
  15. 208
  16. 303
  17. correct
  18. 225
  19. 448
  20. 27
  21. 267
  22. 2401
  23. 325
  24. 24.25
  25. 240
  26. 135
  27. 129.15
  28. 3721
  29. 212
  30. 85
  31. 22
  32. 735
  33. 180
  34. 324
  35. 338
  36. 517
  37. 2800
  38. 187
  39. 143
  40. 2.4

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