Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 528 · 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. 2.18 × 18 =
3. 3.12 × 12 =
4. 4.47 × 14 =
5. 5.11 × 12 =
6. 6.43 × 14 =
7. 7.16 × 18 =
8. 8.32 × 24 =
9. 9.28 × 14 =
10. 10.28 × 16 =
11. 11.43 × 12 =
12. 12.17 × 14 =
13. 13.22 × 16 =
14. 14.28 × 15 =
15. 15.36 × 12 =
16. 16.16 × 16 =
17. 17.21 × 18 =
18. 18.40 × 18 =
19. 19.27 × 14 =
20. 20.41 × 16 =
21. 21.33 × 14 =
22. 22.39 × 12 =
23. 23.40 × 15 =
24. 24.11 × 16 =
25. 25.47 × 18 =
26. 26.46 × 14 =
27. 27.25 × 12 =
28. 28.46 × 24 =
29. 29.21 × 16 =
30. 30.23 × 18 =
31. 31.16 × 24 =
32. 32.36 × 16 =
33. 33.32 × 18 =
34. 34.14 × 24 =
35. 35.14 × 12 =
36. 36.15 × 12 =
37. 37.24 × 24 =
38. 38.47 × 16 =
39. 39.13 × 18 =
40. 40.39 × 18 =

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