Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 752 · 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. 1.14 × 24 =
2. 2.45 × 14 =
3. 3.29 × 16 =
4. 4.33 × 18 =
5. 5.43 × 12 =
6. 6.33 × 16 =
7. 7.19 × 24 =
8. 8.45 × 12 =
9. 9.11 × 16 =
10. 10.49 × 18 =
11. 11.42 × 18 =
12. 12.44 × 24 =
13. 13.36 × 16 =
14. 14.46 × 16 =
15. 15.20 × 15 =
16. 16.36 × 14 =
17. 17.47 × 16 =
18. 18.16 × 18 =
19. 19.43 × 18 =
20. 20.34 × 18 =
21. 21.44 × 12 =
22. 22.41 × 16 =
23. 23.42 × 12 =
24. 24.41 × 15 =
25. 25.41 × 12 =
26. 26.39 × 18 =
27. 27.18 × 14 =
28. 28.21 × 15 =
29. 29.35 × 16 =
30. 30.38 × 15 =
31. 31.37 × 16 =
32. 32.41 × 24 =
33. 33.41 × 14 =
34. 34.28 × 15 =
35. 35.24 × 18 =
36. 36.24 × 12 =
37. 37.40 × 12 =
38. 38.13 × 12 =
39. 39.26 × 14 =
40. 40.49 × 16 =

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