Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 938 · 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 × 15 =
2. 2.28 × 24 =
3. 3.35 × 15 =
4. 4.40 × 12 =
5. 5.35 × 12 =
6. 6.39 × 24 =
7. 7.42 × 14 =
8. 8.45 × 12 =
9. 9.46 × 15 =
10. 10.37 × 14 =
11. 11.23 × 12 =
12. 12.14 × 14 =
13. 13.46 × 24 =
14. 14.28 × 14 =
15. 15.43 × 18 =
16. 16.16 × 15 =
17. 17.46 × 18 =
18. 18.39 × 16 =
19. 19.34 × 18 =
20. 20.49 × 18 =
21. 21.45 × 16 =
22. 22.48 × 12 =
23. 23.45 × 15 =
24. 24.33 × 12 =
25. 25.40 × 18 =
26. 26.34 × 12 =
27. 27.48 × 24 =
28. 28.37 × 18 =
29. 29.31 × 18 =
30. 30.28 × 12 =
31. 31.13 × 15 =
32. 32.43 × 14 =
33. 33.36 × 16 =
34. 34.29 × 14 =
35. 35.47 × 14 =
36. 36.44 × 14 =
37. 37.12 × 14 =
38. 38.47 × 18 =
39. 39.27 × 18 =
40. 40.24 × 14 =

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