Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 982 · 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 × 18 =
2. 2.19 × 14 =
3. 3.40 × 15 =
4. 4.12 × 12 =
5. 5.26 × 24 =
6. 6.21 × 14 =
7. 7.16 × 14 =
8. 8.42 × 15 =
9. 9.38 × 14 =
10. 10.41 × 14 =
11. 11.27 × 18 =
12. 12.14 × 24 =
13. 13.17 × 16 =
14. 14.13 × 12 =
15. 15.31 × 14 =
16. 16.29 × 12 =
17. 17.19 × 16 =
18. 18.44 × 24 =
19. 19.35 × 24 =
20. 20.26 × 15 =
21. 21.35 × 14 =
22. 22.25 × 14 =
23. 23.42 × 12 =
24. 24.17 × 18 =
25. 25.48 × 24 =
26. 26.20 × 12 =
27. 27.19 × 15 =
28. 28.21 × 24 =
29. 29.32 × 15 =
30. 30.36 × 24 =
31. 31.15 × 24 =
32. 32.12 × 16 =
33. 33.22 × 24 =
34. 34.39 × 14 =
35. 35.21 × 15 =
36. 36.17 × 12 =
37. 37.21 × 18 =
38. 38.47 × 14 =
39. 39.15 × 15 =
40. 40.39 × 24 =

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