Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 721 · 40 questions

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.

1. 1.45 × 5 =
2. 2.51 × 5 =
3. 3.28 × 5 =
4. 4.30 × 5 =
5. 5.33 × 5 =
6. 6.13 × 5 =
7. 7.43 × 5 =
8. 8.29 × 50 =
9. 9.39 × 50 =
10. 10.36 × 50 =
11. 11.20 × 5 =
12. 12.21 × 5 =
13. 13.28 × 50 =
14. 14.22 × 5 =
15. 15.86 × 50 =
16. 16.27 × 5 =
17. 17.54 × 5 =
18. 18.86 × 5 =
19. 19.26 × 5 =
20. 20.64 × 5 =
21. 21.50 × 5 =
22. 22.33 × 5 =
23. 23.26 × 5 =
24. 24.33 × 50 =
25. 25.53 × 50 =
26. 26.56 × 5 =
27. 27.71 × 5 =
28. 28.25 × 50 =
29. 29.72 × 5 =
30. 30.78 × 5 =
31. 31.38 × 5 =
32. 32.48 × 5 =
33. 33.75 × 50 =
34. 34.22 × 5 =
35. 35.44 × 50 =
36. 36.42 × 50 =
37. 37.37 × 5 =
38. 38.56 × 5 =
39. 39.90 × 50 =
40. 40.21 × 5 =

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