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Business Mathematics Brief 12th Edition by Stanley Salzman ,Gary Clendenen, Charles Miller
Edition 12ISBN: 978-0132605540Business Mathematics Brief 12th Edition by Stanley Salzman ,Gary Clendenen, Charles Miller
Edition 12ISBN: 978-0132605540 Exercise 120
First estimate using front-end rounding and then multiply. (See Example.)
Multiplying Decimals
Multiply each of the following.
(a) 8.34 × 4.2
(b).032 ×.07
SOLUTION
(a) First multiply the given numbers as if they were whole numbers.
There are two decimal places in 8.34 and one in 4.2. This means that there are 2 + 1=3 decimal places in the final answer. Find the final answer by starting at the right and counting three places to the left:
35.028 3 places to the left
(b) Here, it is necessary to attach zeros at the left in the answer:
Multiplying Decimals
Multiply each of the following.
(a) 8.34 × 4.2
(b).032 ×.07
SOLUTION
(a) First multiply the given numbers as if they were whole numbers.
There are two decimal places in 8.34 and one in 4.2. This means that there are 2 + 1=3 decimal places in the final answer. Find the final answer by starting at the right and counting three places to the left:
35.028 3 places to the left
(b) Here, it is necessary to attach zeros at the left in the answer:
Explanation
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Estimate using front-end rounding and th...
Business Mathematics Brief 12th Edition by Stanley Salzman ,Gary Clendenen, Charles Miller
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