Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 676 · 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. 1.30 × 24 =
2. 2.20 × 24 =
3. 3.21 × 15 =
4. 4.38 × 14 =
5. 5.37 × 12 =
6. 6.16 × 18 =
7. 7.21 × 12 =
8. 8.24 × 18 =
9. 9.44 × 14 =
10. 10.14 × 24 =
11. 11.12 × 24 =
12. 12.47 × 14 =
13. 13.39 × 14 =
14. 14.41 × 14 =
15. 15.44 × 16 =
16. 16.43 × 14 =
17. 17.15 × 15 =
18. 18.22 × 18 =
19. 19.35 × 12 =
20. 20.36 × 14 =
21. 21.45 × 14 =
22. 22.33 × 14 =
23. 23.15 × 12 =
24. 24.27 × 15 =
25. 25.18 × 14 =
26. 26.40 × 24 =
27. 27.16 × 12 =
28. 28.19 × 16 =
29. 29.46 × 14 =
30. 30.42 × 16 =
31. 31.38 × 18 =
32. 32.38 × 24 =
33. 33.30 × 18 =
34. 34.44 × 18 =
35. 35.48 × 18 =
36. 36.38 × 15 =
37. 37.41 × 15 =
38. 38.49 × 16 =
39. 39.23 × 24 =
40. 40.28 × 16 =

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