Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 724 · 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. 1.32 × 14 =
2. 2.23 × 14 =
3. 3.13 × 12 =
4. 4.11 × 14 =
5. 5.14 × 14 =
6. 6.42 × 24 =
7. 7.21 × 16 =
8. 8.13 × 16 =
9. 9.12 × 24 =
10. 10.46 × 18 =
11. 11.12 × 15 =
12. 12.38 × 24 =
13. 13.34 × 16 =
14. 14.47 × 24 =
15. 15.45 × 16 =
16. 16.37 × 24 =
17. 17.49 × 24 =
18. 18.11 × 24 =
19. 19.47 × 18 =
20. 20.44 × 16 =
21. 21.31 × 18 =
22. 22.15 × 12 =
23. 23.26 × 24 =
24. 24.40 × 14 =
25. 25.19 × 14 =
26. 26.13 × 18 =
27. 27.39 × 16 =
28. 28.45 × 15 =
29. 29.29 × 14 =
30. 30.24 × 24 =
31. 31.13 × 15 =
32. 32.21 × 14 =
33. 33.32 × 24 =
34. 34.12 × 18 =
35. 35.29 × 12 =
36. 36.27 × 24 =
37. 37.22 × 12 =
38. 38.49 × 18 =
39. 39.45 × 18 =
40. 40.13 × 24 =

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