← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 893 · 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.₹18.75 + ₹40.05 =
  2. 2.205 − 76 =
  3. 3.19 × 11 =
  4. 4.260 − 99 =
  5. 5.5 + 6 + 5 + 3 =
  6. 6.Check with nines: 92 × 19 = 1748. Correct or wrong? (a) wrong (b) correct
  7. 7.₹29.60 + ₹34.55 =
  8. 8.8 × 15 =
  9. 9.22 × 4 =
  10. 10.Check with nines: 36 × 31 = 1116. Correct or wrong? (a) wrong (b) correct
  11. 11.187 − 98 =
  12. 12.14 × 17 =
  13. 13.10 × 15 =
  14. 14.Check with nines: 556 + 990 = 1551. Correct or wrong? (a) wrong (b) correct
  15. 15.377 − 18 =
  16. 16.88 + 12 + 40 + 21 =
  17. 17.463 + 38 =
  18. 18.571 − 36 =
  19. 19.12 × 15 =
  20. 20.15 + 31 + 36 + 13 =
  21. 21.71² =
  22. 22.Best estimate of 42 × 92? (a) 360 (b) 3600 (c) 36000 (d) 7200
  23. 23.161 + 49 =
  24. 24.49 × 8 =
  25. 25.875 ÷ 5 =
  26. 26.61 × 15 =
  27. 27.56 × 15 =
  28. 28.₹32.10 + ₹13.45 =
  29. 29.25% of 20 =
  30. 30.29² =
  31. 31.₹19.45 − ₹11.70 =
  32. 32.53 + 61 + 63 + 73 =
  33. 33.41 × 15 =
  34. 34.4 + 1 + 6 + 7 + 6 =
  35. 35.Best estimate of 502 × 7? (a) 35000 (b) 7000 (c) 3500 (d) 350
  36. 36.89² =
  37. 37.331 − 48 =
  38. 38.14 × 12 =
  39. 39.29² =
  40. 40.15% of 670 =

Answer key

  1. 58.8
  2. 129
  3. 209
  4. 161
  5. 19
  6. correct
  7. 64.15
  8. 120
  9. 88
  10. correct
  11. 89
  12. 238
  13. 150
  14. wrong
  15. 359
  16. 161
  17. 501
  18. 535
  19. 180
  20. 95
  21. 5041
  22. 3600
  23. 210
  24. 392
  25. 175
  26. 915
  27. 840
  28. 45.55
  29. 5
  30. 841
  31. 7.75
  32. 250
  33. 615
  34. 24
  35. 3500
  36. 7921
  37. 283
  38. 168
  39. 841
  40. 100.5

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