Year 4 Exam > Year 4 Notes > Year 4 Mathematics > How to add and subtract fractions
How to add and subtract fractions | Year 4 Mathematics PDF Download
Common Denominators
- Adding and subtracting fractions is simpler when the denominators are the same.
- For instance, These are called the denominators.
Equivalent fractions
However, sometimes the denominators are different.
You can use equivalent fractions to make them the same.
A common multiple of 2 and 3 is 6.
So, for each fraction we need an equivalent fraction with a denominator of 6.
To find the equivalent fraction for 1/2 we need to multiply the numerator and denominator by 3.
And to find the equivalent fraction for 1/3 we must multiply the numerator and denominator by 2.
Now the denominators are the same we can add them together.
Question for How to add and subtract fractionsTry yourself: Which of the following is the correct equivalent fraction for 2/5 in order to add it to 1/3?View Solution
The document How to add and subtract fractions | Year 4 Mathematics is a part of the Year 4 Course Year 4 Mathematics.
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FAQs on How to add and subtract fractions - Year 4 Mathematics
| 1. What are common denominators in fractions? |  |
Ans. Common denominators are numbers that are shared by two or more fractions, making it easier to add or subtract them.
| 2. How do you find equivalent fractions? | |
Ans. To find equivalent fractions, you can multiply or divide both the numerator and denominator of a fraction by the same number.
| 3. How do you add fractions with different denominators? | |
Ans. To add fractions with different denominators, you first need to find a common denominator by finding the least common multiple of the denominators. Then, you can add the fractions as usual.
| 4. How do you subtract fractions with common denominators? | |
Ans. To subtract fractions with common denominators, simply subtract the numerators while keeping the denominator the same.
| 5. Why are common denominators important when working with fractions? | |
Ans. Common denominators are important when working with fractions because they allow us to easily compare and combine fractions in calculations such as addition and subtraction.
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Nov 23, 2024 Last updated |
Document Description: How to add and subtract fractions for Year 4 2024 is part of Year 4 Mathematics preparation.
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