Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 826 · 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. 1.49 × 12 =
2. 2.17 × 15 =
3. 3.25 × 14 =
4. 4.41 × 14 =
5. 5.26 × 12 =
6. 6.29 × 14 =
7. 7.24 × 12 =
8. 8.33 × 15 =
9. 9.44 × 16 =
10. 10.38 × 24 =
11. 11.45 × 15 =
12. 12.24 × 15 =
13. 13.20 × 18 =
14. 14.17 × 14 =
15. 15.25 × 16 =
16. 16.49 × 18 =
17. 17.48 × 15 =
18. 18.14 × 14 =
19. 19.43 × 24 =
20. 20.24 × 16 =
21. 21.34 × 14 =
22. 22.40 × 24 =
23. 23.17 × 18 =
24. 24.16 × 18 =
25. 25.29 × 15 =
26. 26.34 × 18 =
27. 27.16 × 16 =
28. 28.15 × 12 =
29. 29.33 × 24 =
30. 30.48 × 12 =
31. 31.47 × 16 =
32. 32.30 × 14 =
33. 33.44 × 15 =
34. 34.41 × 12 =
35. 35.26 × 24 =
36. 36.42 × 12 =
37. 37.39 × 15 =
38. 38.37 × 18 =
39. 39.19 × 16 =
40. 40.34 × 24 =

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