Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 917 · 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. 1.12 × 15 =
2. 2.48 × 24 =
3. 3.26 × 16 =
4. 4.15 × 14 =
5. 5.33 × 24 =
6. 6.43 × 12 =
7. 7.21 × 14 =
8. 8.27 × 16 =
9. 9.17 × 16 =
10. 10.24 × 12 =
11. 11.35 × 24 =
12. 12.32 × 14 =
13. 13.22 × 18 =
14. 14.40 × 16 =
15. 15.45 × 24 =
16. 16.41 × 14 =
17. 17.24 × 24 =
18. 18.13 × 14 =
19. 19.11 × 14 =
20. 20.45 × 18 =
21. 21.15 × 24 =
22. 22.25 × 12 =
23. 23.49 × 18 =
24. 24.41 × 24 =
25. 25.24 × 15 =
26. 26.27 × 18 =
27. 27.19 × 24 =
28. 28.19 × 16 =
29. 29.37 × 24 =
30. 30.32 × 18 =
31. 31.22 × 16 =
32. 32.22 × 14 =
33. 33.35 × 12 =
34. 34.37 × 16 =
35. 35.16 × 12 =
36. 36.23 × 14 =
37. 37.32 × 16 =
38. 38.40 × 15 =
39. 39.46 × 14 =
40. 40.28 × 15 =

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