Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 690 · 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. 1.25 × 12 =
2. 2.23 × 14 =
3. 3.47 × 12 =
4. 4.23 × 18 =
5. 5.28 × 14 =
6. 6.42 × 24 =
7. 7.47 × 15 =
8. 8.44 × 14 =
9. 9.42 × 18 =
10. 10.27 × 18 =
11. 11.18 × 15 =
12. 12.19 × 24 =
13. 13.46 × 16 =
14. 14.20 × 18 =
15. 15.19 × 14 =
16. 16.45 × 14 =
17. 17.12 × 12 =
18. 18.33 × 24 =
19. 19.33 × 16 =
20. 20.22 × 24 =
21. 21.29 × 12 =
22. 22.17 × 24 =
23. 23.29 × 14 =
24. 24.49 × 16 =
25. 25.17 × 14 =
26. 26.36 × 24 =
27. 27.37 × 15 =
28. 28.15 × 16 =
29. 29.21 × 15 =
30. 30.45 × 16 =
31. 31.11 × 15 =
32. 32.37 × 12 =
33. 33.32 × 14 =
34. 34.18 × 24 =
35. 35.15 × 14 =
36. 36.25 × 14 =
37. 37.35 × 12 =
38. 38.26 × 15 =
39. 39.42 × 12 =
40. 40.14 × 24 =

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