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

Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 65 · 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. 1.42 × 50 =
  2. 2.66 × 50 =
  3. 3.70 × 5 =
  4. 4.74 × 50 =
  5. 5.97 × 5 =
  6. 6.48 × 5 =
  7. 7.96 × 5 =
  8. 8.97 × 5 =
  9. 9.93 × 50 =
  10. 10.29 × 50 =
  11. 11.37 × 5 =
  12. 12.96 × 50 =
  13. 13.56 × 5 =
  14. 14.46 × 50 =
  15. 15.66 × 50 =
  16. 16.16 × 5 =
  17. 17.26 × 5 =
  18. 18.98 × 50 =
  19. 19.86 × 5 =
  20. 20.66 × 50 =
  21. 21.70 × 50 =
  22. 22.67 × 50 =
  23. 23.35 × 5 =
  24. 24.93 × 5 =
  25. 25.55 × 50 =
  26. 26.12 × 5 =
  27. 27.80 × 5 =
  28. 28.60 × 50 =
  29. 29.61 × 5 =
  30. 30.33 × 5 =
  31. 31.31 × 50 =
  32. 32.32 × 50 =
  33. 33.90 × 50 =
  34. 34.48 × 5 =
  35. 35.66 × 5 =
  36. 36.40 × 5 =
  37. 37.37 × 50 =
  38. 38.82 × 5 =
  39. 39.83 × 50 =
  40. 40.22 × 5 =

Answer key

  1. 2100
  2. 3300
  3. 350
  4. 3700
  5. 485
  6. 240
  7. 480
  8. 485
  9. 4650
  10. 1450
  11. 185
  12. 4800
  13. 280
  14. 2300
  15. 3300
  16. 80
  17. 130
  18. 4900
  19. 430
  20. 3300
  21. 3500
  22. 3350
  23. 175
  24. 465
  25. 2750
  26. 60
  27. 400
  28. 3000
  29. 305
  30. 165
  31. 1550
  32. 1600
  33. 4500
  34. 240
  35. 330
  36. 200
  37. 1850
  38. 410
  39. 4150
  40. 110

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