Question 1153319


The easiest way to estimate a sum or a difference of decimals is to round the decimal. You can do that by rounding each decimal to the nearest whole number.

estimate the difference {{{4.08 - 1.74}}}

{{{4.08}}} round it to {{{4}}}
{{{ 1.74}}} round it to {{{2}}}

{{{4 - 2=2}}}->estimated difference


calculate: {{{4.08 - 1.74=2.34}}}


estimate the sum{{{4.08 + 1.74}}}

{{{4.08}}} round it to {{{4}}}
{{{ 1.74}}} round it to {{{2}}}

{{{4 +2=6}}}->estimated sum


calculate: {{{4.08 +1.74=5.82}}}