x10 and x100
VocabularyNotesThis also works if you need to multiply by 1,000, 10,000 and so on.
What if you need to solve this problem: 12 x 30 = ? Could you use the same type of strategy? Of course! First you can think about 12 x 3 and then just count and write the number of zeros from the problem. 12 x 3 is 36 and there is one zero in the problem, so 12 x 30 = 360. |