Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 443 · 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. 1.45 × 15 =
2. 2.18 × 16 =
3. 3.13 × 14 =
4. 4.38 × 15 =
5. 5.24 × 14 =
6. 6.11 × 15 =
7. 7.26 × 12 =
8. 8.17 × 14 =
9. 9.30 × 24 =
10. 10.21 × 16 =
11. 11.37 × 15 =
12. 12.17 × 24 =
13. 13.26 × 15 =
14. 14.14 × 16 =
15. 15.14 × 14 =
16. 16.23 × 18 =
17. 17.15 × 12 =
18. 18.15 × 16 =
19. 19.46 × 12 =
20. 20.19 × 14 =
21. 21.47 × 12 =
22. 22.23 × 12 =
23. 23.36 × 12 =
24. 24.23 × 15 =
25. 25.34 × 24 =
26. 26.25 × 18 =
27. 27.11 × 14 =
28. 28.31 × 12 =
29. 29.40 × 24 =
30. 30.32 × 16 =
31. 31.48 × 12 =
32. 32.21 × 14 =
33. 33.32 × 24 =
34. 34.25 × 24 =
35. 35.49 × 12 =
36. 36.20 × 14 =
37. 37.48 × 18 =
38. 38.36 × 15 =
39. 39.37 × 14 =
40. 40.44 × 24 =

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