16.5
1660
-121
352
First, you have to turn 12% into a decimal, so you bring the decimal two spaces to the left and cut out the percent symbol, so it should be (.12). next you have to multiply 320 by your decimal, .12, so you multiply that 320 x .12 _____ 640 320 _______ 3840 add the decimal and you get 38.40 or 38.4
How about: 2*320 = 640
71
1.52
6
Multiply the three-digit number by the one's digit, or last digit, of the two-digit number. That is your first part. Now multiply by the second-to-last digit, or ten's digit, and multiply the result by 10. That is your second part. Add the two parts and that is your answer.
7
28