Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 527 · 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. 1.12 × 24 =
2. 2.41 × 18 =
3. 3.30 × 15 =
4. 4.37 × 16 =
5. 5.11 × 18 =
6. 6.14 × 18 =
7. 7.42 × 24 =
8. 8.45 × 16 =
9. 9.43 × 24 =
10. 10.48 × 14 =
11. 11.30 × 12 =
12. 12.33 × 12 =
13. 13.27 × 12 =
14. 14.46 × 15 =
15. 15.42 × 16 =
16. 16.31 × 16 =
17. 17.22 × 18 =
18. 18.48 × 15 =
19. 19.39 × 18 =
20. 20.40 × 12 =
21. 21.12 × 14 =
22. 22.25 × 12 =
23. 23.18 × 16 =
24. 24.26 × 16 =
25. 25.34 × 24 =
26. 26.11 × 15 =
27. 27.13 × 15 =
28. 28.12 × 15 =
29. 29.30 × 16 =
30. 30.40 × 14 =
31. 31.20 × 14 =
32. 32.38 × 16 =
33. 33.20 × 12 =
34. 34.44 × 24 =
35. 35.17 × 16 =
36. 36.18 × 18 =
37. 37.44 × 14 =
38. 38.28 × 12 =
39. 39.47 × 15 =
40. 40.49 × 18 =

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