Multiplying the common ordinary fractions: 20/8 × 32/8 = ? The multiplication process explained. The result written: As a positive integer number. As a positive improper fraction (the denominator = 1). As a percentage
20/8 × 32/8 = ?
Simplify the operation
Reduce (simplify) the fractions to their lowest terms equivalents:
To fully reduce a fraction, to the lowest terms equivalent: divide the numerator and denominator by their greatest common factor, GCF.
* By reducing the values of the numerators and the denominators of the fractions the calculations are easier to make.
A fully reduced (simplified) fraction is one with the smallest possible numerator and denominator, one that can no longer be reduced, and it is called an irreducible fraction.
* In order to easily reduce a fraction, factor its numerator and denominator. This way all the common prime factors are easily identified and crossed out, without calculating the GCF.
20/8 =
(22 × 5)/23 =
((22 × 5) ÷ 22)/(23 ÷ 22) =
(22 ÷ 22 × 5)/(23 ÷ 22) =
(2(2 - 2) × 5)/2(3 - 2) =
(20 × 5)/21 =
(1 × 5)/2 =
5/2
32/8 =
25/23 =
(25 ÷ 23)/(23 ÷ 23) =
2(5 - 3)/2(3 - 3) =
22/20 =
22/1 =
4/1 =
4
Rewrite the equivalent simplified operation:
20/8 × 32/8 =
5/2 × 4
Perform the operation of calculating the fractions
Multiply the fractions:
1) Multiply the numerators, that is, all the numbers above the fractions bars, separately.
2) Multiply the denominators, that is, all the numbers below the fractions bars, separately.
5/2 × 4 =
(5 × 4) / 2 =
(5 × 22) / 2 =
(22 × 5) / 2
Fully reduce (simplify) the end fraction to its lowest terms equivalent:
Calculate the greatest common factor, GCF,
of the numerator and denominator of the fraction:
A fully reduced (simplified) fraction is one with the smallest possible numerator and denominator, one that can no longer be reduced, and it is called an irreducible fraction.
To fully reduce a fraction, to the lowest terms equivalent: divide the numerator and denominator by their greatest common factor, GCF.
* To calculate the GCF, we need to factor the numerator and the denominator of the fraction into prime factors.
Then multiply all the common prime factors: if there are repeating prime factors we only take them once, and only the ones having the lowest exponent (the lowest powers).
GCF (22 × 5; 2) = 2
Divide the numerator and the denominator by their GCF:
(22 × 5) / 2 =
((22 × 5) ÷ 2) / (2 ÷ 2) =
(22 ÷ 2 × 5)/(2 ÷ 2) =
(2(2 - 1) × 5)/1 =
(21 × 5)/1 =
(2 × 5)/1 =
2 × 5 =
10
Rewrite the intermediate result
As a positive improper fraction:
(the denominator = 1)
An improper fraction: the value of the numerator is larger than or equal to the value of the denominator.
10 = 10/1
As a percentage:
A percentage value p% is equal to the fraction: p/100, for any decimal number p. So, we need to change the form of the number calculated above, to show a denominator of 100.
To do that, multiply the number by the fraction 100/100.
The value of the fraction 100/100 = 1, so by multiplying the number by this fraction the result is not changing, only the form.
10 =
10 × 100/100 =
(10 × 100)/100 =
1,000/100 =
1,000%
The final answer:
written in three ways
As a positive integer number:
20/8 × 32/8 = 10
As a positive improper fraction:
(the denominator = 1)
20/8 × 32/8 = 10/1
As a percentage:
20/8 × 32/8 = 1,000%
How are the numbers being written on our website: comma ',' is used as a thousands separator; point '.' used as a decimal separator; numbers rounded off to max. 12 decimals (if the case). The set of the used symbols on our website: '/' the fraction bar; ÷ dividing; × multiplying; + plus (adding); - minus (subtracting); = equal; ≈ approximately equal.
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