Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 955 · 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. 1.48 × 18 =
2. 2.23 × 14 =
3. 3.12 × 14 =
4. 4.20 × 24 =
5. 5.18 × 16 =
6. 6.45 × 16 =
7. 7.49 × 12 =
8. 8.12 × 12 =
9. 9.23 × 24 =
10. 10.17 × 15 =
11. 11.44 × 12 =
12. 12.17 × 24 =
13. 13.19 × 12 =
14. 14.36 × 16 =
15. 15.21 × 16 =
16. 16.48 × 15 =
17. 17.12 × 15 =
18. 18.19 × 15 =
19. 19.13 × 18 =
20. 20.12 × 16 =
21. 21.40 × 18 =
22. 22.11 × 18 =
23. 23.20 × 16 =
24. 24.42 × 12 =
25. 25.16 × 15 =
26. 26.32 × 16 =
27. 27.18 × 14 =
28. 28.41 × 14 =
29. 29.14 × 14 =
30. 30.30 × 15 =
31. 31.46 × 24 =
32. 32.16 × 18 =
33. 33.49 × 15 =
34. 34.38 × 16 =
35. 35.34 × 16 =
36. 36.42 × 15 =
37. 37.29 × 15 =
38. 38.39 × 14 =
39. 39.27 × 12 =
40. 40.23 × 18 =

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