Given the expression :
[tex]172+36.2+766.1+17.6[/tex]We will estimate the answer by rounding each number to the nearest 10
Look at the digit in the units place if 5 or greater add to the digit at the tens place
So,
[tex]\begin{gathered} 172\approx170 \\ 36.2\approx40 \\ 766.1\approx770 \\ 17.6\approx20 \end{gathered}[/tex]so, the answer will be :
[tex]170+40+770+20=1000[/tex]So, the answer is : 1,000
