Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 579 · 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. 1.27 × 18 =
2. 2.37 × 12 =
3. 3.20 × 14 =
4. 4.47 × 15 =
5. 5.38 × 16 =
6. 6.39 × 12 =
7. 7.44 × 24 =
8. 8.24 × 16 =
9. 9.30 × 12 =
10. 10.39 × 18 =
11. 11.46 × 24 =
12. 12.34 × 12 =
13. 13.44 × 15 =
14. 14.34 × 18 =
15. 15.12 × 14 =
16. 16.30 × 18 =
17. 17.19 × 16 =
18. 18.30 × 15 =
19. 19.28 × 12 =
20. 20.28 × 18 =
21. 21.33 × 18 =
22. 22.23 × 14 =
23. 23.42 × 18 =
24. 24.31 × 24 =
25. 25.35 × 16 =
26. 26.21 × 14 =
27. 27.36 × 15 =
28. 28.24 × 15 =
29. 29.37 × 14 =
30. 30.21 × 12 =
31. 31.16 × 16 =
32. 32.24 × 14 =
33. 33.26 × 18 =
34. 34.18 × 12 =
35. 35.34 × 14 =
36. 36.24 × 18 =
37. 37.38 × 15 =
38. 38.44 × 14 =
39. 39.16 × 14 =
40. 40.23 × 16 =

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