Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 7 · 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. 1.31 × 14 =
2. 2.20 × 12 =
3. 3.16 × 18 =
4. 4.38 × 14 =
5. 5.20 × 16 =
6. 6.16 × 12 =
7. 7.24 × 16 =
8. 8.21 × 14 =
9. 9.11 × 18 =
10. 10.16 × 15 =
11. 11.32 × 14 =
12. 12.28 × 18 =
13. 13.27 × 15 =
14. 14.36 × 12 =
15. 15.12 × 16 =
16. 16.42 × 12 =
17. 17.27 × 16 =
18. 18.49 × 15 =
19. 19.30 × 16 =
20. 20.49 × 24 =
21. 21.24 × 18 =
22. 22.33 × 14 =
23. 23.34 × 24 =
24. 24.16 × 24 =
25. 25.28 × 12 =
26. 26.11 × 15 =
27. 27.31 × 18 =
28. 28.41 × 16 =
29. 29.36 × 14 =
30. 30.49 × 14 =
31. 31.25 × 16 =
32. 32.18 × 12 =
33. 33.30 × 14 =
34. 34.14 × 24 =
35. 35.44 × 24 =
36. 36.45 × 24 =
37. 37.14 × 16 =
38. 38.47 × 12 =
39. 39.11 × 14 =
40. 40.27 × 14 =

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