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What is a fraction?

A fraction is a way to talk about part of a whole.

Imagine sharing one pizza with friends. When you cut it into equal parts and take some, you are using a fraction!

In this lesson you will cut, shade, build and compare fractions. Tap things — try them out! 🎉

Fractions need EQUAL parts

A fraction only works when every piece is the same size. Tap the two chocolate bars below — which one is split into fair, equal parts?

The two numbers of a fraction

34

bottom = 4 how many equal parts in all (the denominator)

top = 3 how many parts we take (the numerator)

This pizza is cut into 4 equal parts. Tap the question below.

In 34, which number tells how many slices we ate?

Shade it to match!

Goal: make the bar show 25  (2 shaded out of 5). Use the buttons to shade or unshade cells.

0 / 5

Click the slices

This cake has 6 equal slices. Tap slices until you have eaten 46 of it.

0 of 6 slices eaten

Comparing fractions

When the bottom numbers are the same, the fraction with the bigger top is bigger. Both pizzas are cut into 8. Which slice plate is more?

38
vs
58

Fractions are all around you

🍫 Half a chocolate bar = 12

🕒 Quarter past = 14 of an hour

🥤 Three-quarters full = 34

🍕 One slice of an 8-slice pizza = 18

A whole thing = the top equals the bottom, like 55 = 1 whole! 🎈

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Great work!

You now understand fractions. Here is what you learned:

You shaded bars, ate cake slices and compared pizzas like a fraction expert. Tap Start again to play once more! 👏