Question

Part A

Use mental math to solve the problem

8.02-5.98


________



Part B


Explain the method of mental math that you used to find the answer. Be specific with each step you took.

Answer 1

a. 2.04

Explanation:

b.

we have the following problem

8.02-5.98

"a number really close to 8 minus a number really close to 6"

8-6=2

"the result will be around 2"

"higher or lower than 2?"

we have "a number higher than 8 minus a number lower than 6"

then we have a number higher than too.

"a number 0.02 higher than 8 minus a number 0.02 lower than 6"

8-6=2

0.02-(-0,02)=0,04

2+0,04=2,04