Given: 79 X 31
To Determine: The value of the given expression using rounding or compatible numbers
Solution
Using rounding or compatibles
[tex]\begin{gathered} 79\times31 \\ =80\times30 \\ =2400 \end{gathered}[/tex]Hence
79 X 31 = 80 X 30 = 2400
Also
[tex]\begin{gathered} 304\div6 \\ =300\div6 \\ =50 \end{gathered}[/tex][tex]\begin{gathered} 558\div8 \\ =560\div8 \\ =70 \end{gathered}[/tex]