Business Mathematics Brief 12th Edition by Stanley Salzman ,Gary Clendenen, Charles Miller

Exercise 152

First use front-end rounding to estimate and then find the exact answer. (See Examples.)

Adding Decimal Numbers
Add 45.93 + 14.017 + 96.5432.
SOLUTION
First, align place values by lining up the decimal points.

Although not required, you can add trailing zeros if you wish so that each number has the same number of digits to the right of the decimal point. Then, add from right to left.

Adding Dollars Exam and Cents

During a recent week, a manager made the following bank deposits to a business account: $1783.38, $4341.15, $2175.94, $896.23, and $2562.53. Use front-end rounding to estimate the total deposits and then find the total deposits.
SOLUTION

The total deposits for the week were $11,759.23, which is close to our estimate.