Answer:
8x0.09=0.72
0.8x0.09=0.072
80x0.9=72
8x0.9=7.2
Step-by-step explanation:
1. = 0.72
2. = 0.072
3. = 72
4. = 7.2
8 times 9 is 72. Each answer is some factor of 72. The 1st is one hundredth. The 2nd is one thousandth. The 3rd is just 72. And the last is one tenth.
