Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 722 · 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. 1.35 × 18 =
2. 2.12 × 14 =
3. 3.30 × 24 =
4. 4.11 × 18 =
5. 5.40 × 24 =
6. 6.16 × 12 =
7. 7.43 × 15 =
8. 8.15 × 14 =
9. 9.47 × 15 =
10. 10.16 × 18 =
11. 11.31 × 16 =
12. 12.21 × 12 =
13. 13.42 × 16 =
14. 14.13 × 18 =
15. 15.44 × 15 =
16. 16.33 × 15 =
17. 17.23 × 24 =
18. 18.15 × 16 =
19. 19.44 × 16 =
20. 20.41 × 16 =
21. 21.33 × 12 =
22. 22.25 × 14 =
23. 23.14 × 16 =
24. 24.39 × 15 =
25. 25.21 × 16 =
26. 26.21 × 14 =
27. 27.27 × 14 =
28. 28.24 × 12 =
29. 29.35 × 16 =
30. 30.38 × 16 =
31. 31.14 × 12 =
32. 32.14 × 18 =
33. 33.37 × 15 =
34. 34.19 × 16 =
35. 35.46 × 15 =
36. 36.49 × 24 =
37. 37.26 × 18 =
38. 38.40 × 14 =
39. 39.24 × 16 =
40. 40.39 × 12 =

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