13.13 equates to 13 and 18.64 equates to 19 dollars (After Rounding)
13 + 19 = 32 dollars
$26.00
15.00
$22.50
46.629999999999995
$18.23 rounding to the nearest dollar results in $18
$6.87826087 rounded to the nearest dollar is $7.00
Yes they can. Consider the values $9.51 & $10.34 - to the nearest dollar, they would be $10. This would also be the result of rounding to the nearest $10.
$26.00
15.00
The estimate is $22.50.
$22.50
Rounding does away with unnecessary detail and thereby makes calculations easier.
It is finding the average value (or cost) of a number of things and then rounding the answer to the nearest dollar.
46.629999999999995
To mentally estimate the total cost of these items, we would substitute the following numbers 2, 1, 3.5, 10, and 6. By rounding to the half-dollar, the estimate would be 22.5. This assumes that the 98 is a 98-cent item. If it were a 98-dollar item, the estimate would be 119.5.