Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 450 · 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. 1.28 × 16 =
2. 2.14 × 14 =
3. 3.46 × 14 =
4. 4.46 × 16 =
5. 5.18 × 16 =
6. 6.30 × 18 =
7. 7.26 × 12 =
8. 8.43 × 15 =
9. 9.19 × 12 =
10. 10.40 × 15 =
11. 11.41 × 12 =
12. 12.48 × 12 =
13. 13.27 × 24 =
14. 14.49 × 15 =
15. 15.34 × 18 =
16. 16.15 × 16 =
17. 17.34 × 12 =
18. 18.44 × 12 =
19. 19.37 × 24 =
20. 20.37 × 14 =
21. 21.31 × 16 =
22. 22.41 × 16 =
23. 23.26 × 16 =
24. 24.45 × 12 =
25. 25.39 × 15 =
26. 26.11 × 12 =
27. 27.41 × 24 =
28. 28.27 × 15 =
29. 29.22 × 18 =
30. 30.15 × 14 =
31. 31.12 × 12 =
32. 32.44 × 18 =
33. 33.30 × 14 =
34. 34.20 × 16 =
35. 35.47 × 15 =
36. 36.34 × 14 =
37. 37.11 × 18 =
38. 38.45 × 24 =
39. 39.35 × 18 =
40. 40.17 × 24 =

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