Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 897 · 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. 1.44 × 14 =
2. 2.45 × 24 =
3. 3.14 × 14 =
4. 4.42 × 14 =
5. 5.45 × 16 =
6. 6.45 × 12 =
7. 7.28 × 18 =
8. 8.46 × 12 =
9. 9.20 × 18 =
10. 10.20 × 15 =
11. 11.46 × 14 =
12. 12.23 × 15 =
13. 13.36 × 14 =
14. 14.38 × 18 =
15. 15.27 × 14 =
16. 16.25 × 24 =
17. 17.28 × 12 =
18. 18.40 × 12 =
19. 19.15 × 12 =
20. 20.47 × 15 =
21. 21.21 × 16 =
22. 22.28 × 14 =
23. 23.12 × 14 =
24. 24.22 × 24 =
25. 25.39 × 16 =
26. 26.22 × 15 =
27. 27.38 × 14 =
28. 28.18 × 24 =
29. 29.47 × 14 =
30. 30.34 × 24 =
31. 31.35 × 24 =
32. 32.15 × 18 =
33. 33.31 × 12 =
34. 34.24 × 15 =
35. 35.23 × 16 =
36. 36.48 × 14 =
37. 37.49 × 12 =
38. 38.17 × 12 =
39. 39.48 × 12 =
40. 40.32 × 12 =

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