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Question 1 of 4
Simplify
21722172
Write fractions in the format “a/b”
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The Highest Common Factor (HCFHCF) 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 HCFHCF
Start by listing out the factors of each number
Factors of 2121:
1372113721
Factors of 7272:
1234689121812346891218
Identify the highest number that is both a factor of 2121 and 7272
Factors of 2121:
1372113721
Factors of 7272:
1234689121812346891218
The HCFHCF of 2121 and 7272 is 33
Divide both the numerator and denominator by 33
21÷372÷321÷372÷3 |
== |
724724 |
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Question 2 of 4
Simplify
120135120135
Write fractions in the format “a/b”
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The Highest Common Factor (HCFHCF) 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 HCFHCF
Alternatively, we can use any common factor and keep dividing until we get the simplest form
120÷5135÷5120÷5135÷5 |
== |
24272427 |
Numbers ending at 55 or 00 are multiples of 55 |
Simplify the fraction further by dividing 33
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