Question

Problem Solving 13. Joanne bought three books that cost $3.95, $4.99, and $6.05. How much did she spend in all? Use compensation and mental math to find the sum. 7 spent ? $3.95 $4.99 $6.05

Answer 1

we can add two numbers first

`\begin{gathered} 3.95 \\ 4.99 \\ ------ \\ 8.94 \end{gathered}`

now we add the result with the following number

`\begin{gathered} 8.94 \\ 6.05 \\ ------ \\ 14.99 \end{gathered}`

the total of books cost $14.99