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Example 3.50 from Prealgebra, 3.4 Multiply and Divide Integers
Divide each of the following:
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.
| ⓐ | |
| The dividend, 16, is being divided by –1. | |
| Dividing a number by –1 gives its opposite. | |
| Notice that the signs were different, so the result was negative. |
| ⓑ | |
| The dividend, –20, is being divided by –1. | |
| Dividing a number by –1 gives its opposite. |
Notice that the signs were the same, so the quotient was positive.
The book's Try It right after this example: same idea, new numbers. Only the answer is given.
Divide:
How did it go?