Use PEDMAS. So first addition has to be done as it is inside parenthesis. After that multiplication has to be done
0.060 +
<u>0.008</u>
<u>0.068</u>
In decimal multiplication, first multiply the numbers ie, 2 * 68 which is 136. Then count the number of decimal places in both the multiplicands and keep the same number of decimal places in the result(136).
2.65 x 2 (since he has to go both to and from work each day) = $5.30 Add the daily cost of the water bottle (1.45) to make his total cost for one day, which is 6.75 Multiply this number by 4 (because he goes 4 days a week) to get $27 for one week.