Question
Explain how to use mental math to simplify the expression.
a.) 8 * 3 * 2
b.) 8 * 2 + 3
c.) 5 + 8 + 3
d.) 10 * 3 -4
I have to explain the process.
Example: Using the associative property of multiplication I can group 8*(3*2) so I get 8*6. Then I multiply 8*6 which is 48.
a.) 8 * 3 * 2
b.) 8 * 2 + 3
c.) 5 + 8 + 3
d.) 10 * 3 -4
I have to explain the process.
Example: Using the associative property of multiplication I can group 8*(3*2) so I get 8*6. Then I multiply 8*6 which is 48.
Answers
PsyDAG
You did a good job with a. If there are no parentheses, multiply first before adding or subtracting.