Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 52 · 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. 1.36 × 16 =
2. 2.31 × 16 =
3. 3.40 × 14 =
4. 4.23 × 24 =
5. 5.15 × 18 =
6. 6.43 × 14 =
7. 7.46 × 15 =
8. 8.34 × 18 =
9. 9.20 × 14 =
10. 10.12 × 15 =
11. 11.47 × 14 =
12. 12.22 × 12 =
13. 13.23 × 12 =
14. 14.19 × 24 =
15. 15.23 × 16 =
16. 16.34 × 24 =
17. 17.31 × 24 =
18. 18.43 × 12 =
19. 19.20 × 24 =
20. 20.23 × 18 =
21. 21.41 × 15 =
22. 22.37 × 15 =
23. 23.36 × 14 =
24. 24.20 × 15 =
25. 25.30 × 14 =
26. 26.35 × 18 =
27. 27.42 × 14 =
28. 28.22 × 18 =
29. 29.38 × 12 =
30. 30.44 × 14 =
31. 31.19 × 14 =
32. 32.25 × 14 =
33. 33.29 × 18 =
34. 34.32 × 15 =
35. 35.13 × 14 =
36. 36.15 × 15 =
37. 37.44 × 15 =
38. 38.16 × 14 =
39. 39.23 × 14 =
40. 40.29 × 12 =

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