Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 255 · 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. 1.22 × 14 =
2. 2.44 × 15 =
3. 3.45 × 12 =
4. 4.32 × 24 =
5. 5.34 × 14 =
6. 6.20 × 12 =
7. 7.34 × 15 =
8. 8.13 × 15 =
9. 9.49 × 15 =
10. 10.47 × 24 =
11. 11.35 × 24 =
12. 12.18 × 18 =
13. 13.12 × 16 =
14. 14.33 × 15 =
15. 15.43 × 24 =
16. 16.41 × 16 =
17. 17.18 × 15 =
18. 18.35 × 12 =
19. 19.11 × 14 =
20. 20.31 × 15 =
21. 21.29 × 24 =
22. 22.29 × 12 =
23. 23.28 × 12 =
24. 24.23 × 24 =
25. 25.49 × 16 =
26. 26.43 × 18 =
27. 27.21 × 24 =
28. 28.28 × 14 =
29. 29.39 × 12 =
30. 30.25 × 14 =
31. 31.44 × 18 =
32. 32.25 × 12 =
33. 33.13 × 24 =
34. 34.32 × 15 =
35. 35.40 × 15 =
36. 36.16 × 12 =
37. 37.15 × 18 =
38. 38.45 × 18 =
39. 39.22 × 16 =
40. 40.28 × 18 =

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