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Question 1 of 4
Simplify
2172
Write fractions in the format “a/b”
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The Highest Common Factor (HCF) between two numbers is the highest possible number that divides evenly to both numbers.
To simplify a fraction, divide the numerator and denominator by their HCF
Start by listing out the factors of each number
Factors of 72:
12346891218
Identify the highest number that is both a factor of 21 and 72
Factors of 72:
12346891218
The HCF of 21 and 72 is 3
Divide both the numerator and denominator by 3
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Question 2 of 4
Simplify
120135
Write fractions in the format “a/b”
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The Highest Common Factor (HCF) between two numbers is the highest possible number that divides evenly to both numbers.
To simplify a fraction, divide the numerator and denominator by their HCF
Alternatively, we can use any common factor and keep dividing until we get the simplest form
120÷5135÷5 |
= |
2427 |
Numbers ending at 5 or 0 are multiples of 5 |
Simplify the fraction further by dividing 3
Since this can no longer be simplified, 89 is the simplest fraction
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Question 3 of 4
Simplify
600700
Write fractions in the format “a/b”
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The Highest Common Factor (HCF) between two numbers is the highest possible number that divides evenly to both numbers.
Aside from using HCF, we can use an obvious common factor until we get the simplest form
Since both numerator and denominator end with 2 zeroes, both are divisible by 100
Since this can no longer be simplified, 67 is the simplest fraction
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Question 4 of 4
Simplify
160240
Write fractions in the format “a/b”
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The Highest Common Factor (HCF) between two numbers is the highest possible number that divides evenly to both numbers.
To simplify a fraction, divide the numerator and denominator by their HCF
Alternatively, we can use any common factor and keep dividing until we get the simplest form
160÷10240÷10 |
= |
1624 |
Numbers ending at 0 are multiples of 10 |
Simplify the fraction further by dividing 8
Since this can no longer be simplified, 23 is the simplest fraction