The product of two fractions is equal to the product of the numerators divided by the product of the denominators.
A
8 99100
B
- 2 12
C
- 1 34
D
1/10
Practice makes perfect
When multiplyreal numbers, the product of an integer a by an integer b is always positive if those integers have the same sign.
cc
Same Sign & Different Signs
(+)(+)=(+) & (+)(-)=(-)
(-)(-)=(+) & (-)(+)=(-)
We want to find the given product.
- 3.1 * (- 2.9)
In this case both numbers are negatives, so the product will be positive. Before evaluate this expression, we will rewrite the decimal numbers as fractions. We will write fractions with 1 in the denominator.
The calculations are easier if we multiply the divisor and the dividend by the same power of 10 so that the divisor is a whole number. In this case, we will multiply by 10 the numerator and denominator of both fractions.
Now that we have the fractions, we can evaluate the product. When we multiply fractions, we need to remember that the product of two fractions is equal to the product of the numerators divided by the product of the denominators. Let's find the given product!
When multiply real numbers, the product of an integer a by an integer b is always positive if those integers have the same sign.
cc
Same Sign & Different Signs
(+)(+)=(+) & (+)(-)=(-)
(-)(-)=(+) & (-)(+)=(-)
In our case one number is positive and one number is negative, so the product will be negative. Remember that the product of two fractions is equal to the product of the numerators divided by the product of the denominators. Let's find the product!
The calculations are easier if we multiply the divisor and the dividend by the same power of 10 so that the divisor is a whole number. In this case, we will multiply by 10 the numerator and denominator of 0.51.
Now that we have the fractions, we can evaluate the product. When multiply real numbers, the product of an integer a by an integer b is always positive if those integers have the same sign.
cc
Same Sign & Different Signs
(+)(+)=(+) & (+)(-)=(-)
(-)(-)=(+) & (-)(+)=(-)
In our case one number is positive and one number is negative, so the product will be negative. Remember that the product of two fractions is equal to the product of the numerators divided by the product of the denominators. Let's find the product!
We want to find the given product.
- 4/5* - 1/8
When multiply real numbers, the product of an integer a by an integer b is always positive if those integers have the same sign.
cc
Same Sign & Different Signs
(+)(+)=(+) & (+)(-)=(-)
(-)(-)=(+) & (-)(+)=(-)
In our case both numbers are negative, so the product will be positive. Remember that the product of two fractions is equal to the product of the numerators divided by the product of the denominators. Let's find the product!
