← × 5 and × 50: halve first lesson New set →

Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 639 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.78 × 50 =
  2. 2.48 × 50 =
  3. 3.76 × 50 =
  4. 4.89 × 5 =
  5. 5.70 × 5 =
  6. 6.24 × 5 =
  7. 7.85 × 5 =
  8. 8.15 × 5 =
  9. 9.58 × 5 =
  10. 10.39 × 50 =
  11. 11.46 × 50 =
  12. 12.19 × 50 =
  13. 13.58 × 5 =
  14. 14.40 × 50 =
  15. 15.75 × 5 =
  16. 16.25 × 50 =
  17. 17.67 × 50 =
  18. 18.13 × 50 =
  19. 19.15 × 5 =
  20. 20.31 × 5 =
  21. 21.48 × 50 =
  22. 22.18 × 5 =
  23. 23.18 × 50 =
  24. 24.57 × 50 =
  25. 25.56 × 5 =
  26. 26.16 × 5 =
  27. 27.65 × 5 =
  28. 28.34 × 50 =
  29. 29.49 × 5 =
  30. 30.30 × 5 =
  31. 31.69 × 5 =
  32. 32.77 × 50 =
  33. 33.16 × 5 =
  34. 34.68 × 5 =
  35. 35.93 × 50 =
  36. 36.77 × 5 =
  37. 37.82 × 5 =
  38. 38.57 × 50 =
  39. 39.98 × 5 =
  40. 40.62 × 5 =

Answer key

  1. 3900
  2. 2400
  3. 3800
  4. 445
  5. 350
  6. 120
  7. 425
  8. 75
  9. 290
  10. 1950
  11. 2300
  12. 950
  13. 290
  14. 2000
  15. 375
  16. 1250
  17. 3350
  18. 650
  19. 75
  20. 155
  21. 2400
  22. 90
  23. 900
  24. 2850
  25. 280
  26. 80
  27. 325
  28. 1700
  29. 245
  30. 150
  31. 345
  32. 3850
  33. 80
  34. 340
  35. 4650
  36. 385
  37. 410
  38. 2850
  39. 490
  40. 310

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