Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 659 · 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. 1.89 × 5 =
2. 2.30 × 50 =
3. 3.91 × 50 =
4. 4.73 × 50 =
5. 5.15 × 5 =
6. 6.17 × 5 =
7. 7.30 × 50 =
8. 8.85 × 50 =
9. 9.86 × 50 =
10. 10.94 × 50 =
11. 11.33 × 50 =
12. 12.37 × 50 =
13. 13.34 × 50 =
14. 14.68 × 5 =
15. 15.82 × 50 =
16. 16.62 × 50 =
17. 17.27 × 50 =
18. 18.31 × 50 =
19. 19.47 × 50 =
20. 20.79 × 50 =
21. 21.32 × 50 =
22. 22.93 × 5 =
23. 23.76 × 50 =
24. 24.44 × 50 =
25. 25.91 × 50 =
26. 26.91 × 50 =
27. 27.51 × 50 =
28. 28.33 × 50 =
29. 29.46 × 5 =
30. 30.30 × 5 =
31. 31.74 × 50 =
32. 32.15 × 50 =
33. 33.96 × 50 =
34. 34.30 × 5 =
35. 35.83 × 50 =
36. 36.29 × 50 =
37. 37.20 × 50 =
38. 38.37 × 50 =
39. 39.29 × 50 =
40. 40.19 × 5 =

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