← Mixed speed challenge lesson New set →

Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 272 · 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. 1.65 + 56 + 70 + 37 =
  2. 2.Check with nines: 606 + 396 = 1002. Correct or wrong? (a) correct (b) wrong
  3. 3.429 − 76 =
  4. 4.Best estimate of 698 × 3? (a) 4200 (b) 2100 (c) 21000 (d) 210
  5. 5.Check with nines: 391 + 710 = 1103. Correct or wrong? (a) wrong (b) correct
  6. 6.12 × 15 =
  7. 7.55 × 8 =
  8. 8.15 × 15 =
  9. 9.14 × 13 =
  10. 10.50% of 510 =
  11. 11.98 × 50 =
  12. 12.29² =
  13. 13.190 + 47 =
  14. 14.64 × 15 =
  15. 15.₹97.40 − ₹32.25 =
  16. 16.316 + 48 =
  17. 17.5 × 15 =
  18. 18.7 + 3 + 3 + 4 + 7 =
  19. 19.80 × 5 =
  20. 20.51 × 8 =
  21. 21.29² =
  22. 22.11 × 12 =
  23. 23.Best estimate of 61 × 49? (a) 300 (b) 3000 (c) 6000 (d) 30000
  24. 24.675 ÷ 25 =
  25. 25.12 × 50 =
  26. 26.71 + 22 + 50 + 44 =
  27. 27.452 + 18 =
  28. 28.89 × 5 =
  29. 29.6 + 7 + 4 + 6 =
  30. 30.48 × 15 =
  31. 31.411 + 27 =
  32. 32.98 + 19 =
  33. 33.7 + 3 + 1 + 1 =
  34. 34.₹25.15 − ₹19.60 =
  35. 35.Best estimate of 72 × 38? (a) 5600 (b) 2800 (c) 280 (d) 28000
  36. 36.18 × 11 =
  37. 37.117 + 59 =
  38. 38.104 − 38 =
  39. 39.59 + 19 =
  40. 40.291 − 36 =

Answer key

  1. 228
  2. correct
  3. 353
  4. 2100
  5. wrong
  6. 180
  7. 440
  8. 225
  9. 182
  10. 255
  11. 4900
  12. 841
  13. 237
  14. 960
  15. 65.15
  16. 364
  17. 75
  18. 24
  19. 400
  20. 408
  21. 841
  22. 132
  23. 3000
  24. 27
  25. 600
  26. 187
  27. 470
  28. 445
  29. 23
  30. 720
  31. 438
  32. 117
  33. 12
  34. 5.55
  35. 2800
  36. 198
  37. 176
  38. 66
  39. 78
  40. 255

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