Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 856 · 40 questions

The trick (Chain the factors): Split the multiplier into two small factors: 12 = 3 × 4, 14 = 2 × 7, 15 = 3 × 5, 16 = 4 × 4, 18 = 2 × 9, 24 = 4 × 6. Multiply by the first factor. Multiply that answer by the second factor (× 4 is double, double).

1. 1.47 × 12 =
2. 2.46 × 12 =
3. 3.49 × 16 =
4. 4.24 × 18 =
5. 5.15 × 14 =
6. 6.47 × 24 =
7. 7.41 × 12 =
8. 8.25 × 16 =
9. 9.12 × 18 =
10. 10.49 × 14 =
11. 11.29 × 24 =
12. 12.18 × 14 =
13. 13.11 × 12 =
14. 14.22 × 18 =
15. 15.13 × 12 =
16. 16.41 × 16 =
17. 17.20 × 24 =
18. 18.14 × 14 =
19. 19.43 × 16 =
20. 20.40 × 14 =
21. 21.17 × 16 =
22. 22.37 × 18 =
23. 23.13 × 14 =
24. 24.38 × 18 =
25. 25.19 × 16 =
26. 26.11 × 16 =
27. 27.17 × 14 =
28. 28.12 × 24 =
29. 29.27 × 15 =
30. 30.39 × 12 =
31. 31.40 × 12 =
32. 32.19 × 14 =
33. 33.24 × 14 =
34. 34.45 × 16 =
35. 35.27 × 12 =
36. 36.39 × 18 =
37. 37.25 × 15 =
38. 38.16 × 16 =
39. 39.33 × 12 =
40. 40.49 × 12 =

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