Loading…
Example 5.15 from Prealgebra, 5.2 Decimal Operations
Decimal Operations: example 5.15
Multiply:
Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.
Solution
Determine the sign of the product. The signs are the same. The product will be positive. Write the numbers in vertical format, lining up the numbers on the right. Multiply the numbers as if they were whole numbers, temporarily ignoring the decimal points. Place the decimal point. Add the number of decimal places in the factors Place the decimal point 4 places from the right. The product is positive.
Your turn
The book's Try It right after this example: same idea, new numbers. Only the answer is given.
Multiply:
How did it go?