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1/2
Change one third to two sixths.
Class 4 · English Medium · Cambridge · Mathematics
Equivalent fractions and fraction operations
Explore equivalent fractions and fraction operations with an example and your own answers.
About this lesson and its coverage
Original Kidemy foundation practice · Read the example, write your answers, then check. This starter is shared across class versions; it is not a complete board-specific lesson or course.
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Learn the idea
Use equivalent fractions to make denominators the same before combining unlike fractions. Keep the size of the whole unchanged.
Worked example
1/2 + 1/4 = 2/4 + 1/4 = 3/4.
- Read the example and explain which rule or evidence it uses.
- Try each task yourself, then compare the answer and its reason.
Your written practice
Show your working on paper. Check your answer, then choose Next.
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5/8
Change three quarters to six eighths.
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12
First divide twenty into five equal parts, then take three.
Take it further
Apply the idea in a new situation and explain your method. Open writing needs a guardian or teacher to review it.
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5/6
Change two thirds to four sixths.
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5/8
Change one quarter to two eighths.
Write in your own words. A guardian or teacher should review this response.
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Dividing the same-sized whole into three equal pieces makes each piece smaller than dividing it into two. Thus 1/3<1/2.
Use equal-sized wholes and the size of one part.
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