Big Ideas Math: Modeling Real Life, Grade 7
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5. Dividing Rational Numbers
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Exercise 12 Page 77

The quotient of two decimal numbers will be positive if the signs are the same and it will be negative if the signs are different.

0.23

Practice makes perfect
We want to divide two decimal numbers. - 3.45Ă· (- 15) First, recall that when dividing real numbers, the quotient will be positive if the signs are the same and it will be negative if the signs are different. cc Same Sign & Different Signs (+)Ă· (+)=(+) & (+)Ă· (-)=(-) (-)Ă· (-)=(+) & (-)Ă· (+)=(-) In our case both numbers are negative, so the quotient will be positive. - 3.45Ă· (- 15)=3.45Ă· 15 Let's find the quotient! We will divide, multiply, subtract, and compare as many times as we need.
Since 3.45Ă· 15=0.23, we know that - 3.45Ă· (- 15)=0.23.