Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 668 · 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. 1.68 × 5 =
2. 2.38 × 5 =
3. 3.65 × 5 =
4. 4.42 × 50 =
5. 5.92 × 5 =
6. 6.23 × 5 =
7. 7.17 × 5 =
8. 8.32 × 5 =
9. 9.81 × 5 =
10. 10.70 × 5 =
11. 11.76 × 50 =
12. 12.50 × 50 =
13. 13.30 × 5 =
14. 14.21 × 50 =
15. 15.19 × 5 =
16. 16.42 × 50 =
17. 17.19 × 50 =
18. 18.75 × 50 =
19. 19.26 × 5 =
20. 20.70 × 50 =
21. 21.21 × 5 =
22. 22.48 × 5 =
23. 23.81 × 5 =
24. 24.34 × 5 =
25. 25.27 × 5 =
26. 26.38 × 5 =
27. 27.96 × 50 =
28. 28.65 × 5 =
29. 29.14 × 50 =
30. 30.12 × 5 =
31. 31.60 × 50 =
32. 32.80 × 5 =
33. 33.44 × 5 =
34. 34.54 × 50 =
35. 35.91 × 5 =
36. 36.98 × 5 =
37. 37.70 × 50 =
38. 38.93 × 50 =
39. 39.61 × 50 =
40. 40.45 × 50 =

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