Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 62 · 40 questions

The fast method (Double up): × 4: double, then double again. × 8: double three times. To double a big number, double the tens and the ones separately and add: double 37 = 60 + 14 = 74.

1. 1.134 × 4 =
2. 2.15 × 8 =
3. 3.159 × 4 =
4. 4.51 × 8 =
5. 5.40 × 4 =
6. 6.19 × 8 =
7. 7.88 × 4 =
8. 8.125 × 4 =
9. 9.46 × 4 =
10. 10.43 × 8 =
11. 11.40 × 4 =
12. 12.33 × 4 =
13. 13.34 × 8 =
14. 14.55 × 8 =
15. 15.51 × 4 =
16. 16.149 × 4 =
17. 17.139 × 4 =
18. 18.26 × 8 =
19. 19.48 × 8 =
20. 20.44 × 8 =
21. 21.69 × 8 =
22. 22.53 × 8 =
23. 23.12 × 8 =
24. 24.15 × 8 =
25. 25.40 × 8 =
26. 26.75 × 4 =
27. 27.99 × 4 =
28. 28.88 × 4 =
29. 29.40 × 4 =
30. 30.54 × 4 =
31. 31.139 × 4 =
32. 32.143 × 4 =
33. 33.155 × 4 =
34. 34.20 × 8 =
35. 35.140 × 4 =
36. 36.40 × 4 =
37. 37.17 × 8 =
38. 38.40 × 8 =
39. 39.126 × 4 =
40. 40.103 × 4 =

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths