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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 370 · 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. 1.96 × 50 =
  2. 2.63 × 5 =
  3. 3.26 × 5 =
  4. 4.53 × 50 =
  5. 5.50 × 50 =
  6. 6.12 × 5 =
  7. 7.29 × 5 =
  8. 8.74 × 5 =
  9. 9.63 × 50 =
  10. 10.76 × 5 =
  11. 11.95 × 5 =
  12. 12.15 × 5 =
  13. 13.73 × 5 =
  14. 14.87 × 50 =
  15. 15.41 × 5 =
  16. 16.88 × 5 =
  17. 17.45 × 50 =
  18. 18.47 × 50 =
  19. 19.68 × 50 =
  20. 20.28 × 5 =
  21. 21.48 × 5 =
  22. 22.94 × 5 =
  23. 23.27 × 5 =
  24. 24.47 × 5 =
  25. 25.55 × 50 =
  26. 26.25 × 50 =
  27. 27.60 × 50 =
  28. 28.14 × 50 =
  29. 29.52 × 5 =
  30. 30.44 × 50 =
  31. 31.75 × 50 =
  32. 32.46 × 50 =
  33. 33.56 × 50 =
  34. 34.13 × 5 =
  35. 35.13 × 5 =
  36. 36.82 × 5 =
  37. 37.28 × 5 =
  38. 38.81 × 50 =
  39. 39.88 × 50 =
  40. 40.28 × 50 =

Answer key

  1. 4800
  2. 315
  3. 130
  4. 2650
  5. 2500
  6. 60
  7. 145
  8. 370
  9. 3150
  10. 380
  11. 475
  12. 75
  13. 365
  14. 4350
  15. 205
  16. 440
  17. 2250
  18. 2350
  19. 3400
  20. 140
  21. 240
  22. 470
  23. 135
  24. 235
  25. 2750
  26. 1250
  27. 3000
  28. 700
  29. 260
  30. 2200
  31. 3750
  32. 2300
  33. 2800
  34. 65
  35. 65
  36. 410
  37. 140
  38. 4050
  39. 4400
  40. 1400

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