Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 762 · 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 × 15 =
2. 2.14 × 14 =
3. 3.14 × 18 =
4. 4.15 × 12 =
5. 5.29 × 18 =
6. 6.20 × 18 =
7. 7.11 × 14 =
8. 8.15 × 14 =
9. 9.25 × 24 =
10. 10.23 × 24 =
11. 11.13 × 16 =
12. 12.29 × 14 =
13. 13.16 × 15 =
14. 14.46 × 14 =
15. 15.36 × 12 =
16. 16.48 × 18 =
17. 17.49 × 12 =
18. 18.12 × 15 =
19. 19.37 × 24 =
20. 20.46 × 15 =
21. 21.35 × 24 =
22. 22.37 × 15 =
23. 23.24 × 18 =
24. 24.14 × 16 =
25. 25.30 × 24 =
26. 26.38 × 12 =
27. 27.48 × 24 =
28. 28.24 × 16 =
29. 29.36 × 16 =
30. 30.41 × 14 =
31. 31.46 × 24 =
32. 32.34 × 14 =
33. 33.38 × 24 =
34. 34.39 × 16 =
35. 35.16 × 16 =
36. 36.27 × 16 =
37. 37.24 × 24 =
38. 38.19 × 12 =
39. 39.38 × 15 =
40. 40.30 × 14 =

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