Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 705 · 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. 1.23 × 5 =
2. 2.84 × 5 =
3. 3.48 × 50 =
4. 4.44 × 50 =
5. 5.73 × 5 =
6. 6.91 × 5 =
7. 7.42 × 5 =
8. 8.12 × 5 =
9. 9.53 × 50 =
10. 10.21 × 50 =
11. 11.38 × 50 =
12. 12.82 × 5 =
13. 13.49 × 5 =
14. 14.73 × 5 =
15. 15.93 × 5 =
16. 16.16 × 50 =
17. 17.92 × 5 =
18. 18.76 × 5 =
19. 19.28 × 5 =
20. 20.22 × 50 =
21. 21.22 × 50 =
22. 22.78 × 5 =
23. 23.66 × 50 =
24. 24.16 × 50 =
25. 25.47 × 5 =
26. 26.91 × 50 =
27. 27.19 × 5 =
28. 28.26 × 50 =
29. 29.43 × 5 =
30. 30.98 × 50 =
31. 31.79 × 5 =
32. 32.65 × 5 =
33. 33.94 × 5 =
34. 34.81 × 5 =
35. 35.79 × 50 =
36. 36.60 × 50 =
37. 37.93 × 5 =
38. 38.54 × 5 =
39. 39.93 × 50 =
40. 40.92 × 50 =

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