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.

a. 2.04

Step-by-step 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

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it