Question

Which expression best estimates

Answer 1

Hey there! :D

6 3/4 - 1 2/3

We can convert the fractions to decimals, and if the decimals are bigger than .5, we can round up to the nearest whole number.

3/4= .75 <== we can round up to the nearest whole number 

6.75= 7

2/3= .66666 <=== we would also round this up to the nearest whole number

1.66666= 2

7-2 <=== estimated expression

I hope this helps!
~kaikers

Answer 2

7-2 is the correct answer because 6 3/4 can be rounded to 7 and 1 2/3 can be rounded to 2