Build fractions you can see. Drag a topping onto the pizza — or just tap a slice — to top the right number of slices and match the target fraction.
EDUSAMBAM Editorial Team·4 pizzas · Drag & Drop / Tap·Auto-Graded·Last updated: November 2026
Each pizza has a target fraction below it. Drag the topping onto slices to mark them — or simply tap a slice to top or untop it. Top exactly the right number of slices, then press "Check My Pizza". Any slices work, since every slice on a pizza is the same size.
Build 1/4
Top 1 of the 4 slices
0 of 4 slices topped
TOP
Drag onto a slice
Top the right number of slices, then check.
Build 3/8
Top 3 of the 8 slices
0 of 8 slices topped
TOP
Drag onto a slice
Top the right number of slices, then check.
Build 2/3
Top 2 of the 3 slices
0 of 3 slices topped
TOP
Drag onto a slice
Top the right number of slices, then check.
Build 5/6
Top 5 of the 6 slices
0 of 6 slices topped
TOP
Drag onto a slice
Top the right number of slices, then check.
0/4
Pizzas built correctly
Fractions on a Pizza: A Quick Guide
A fraction names part of a whole. When a pizza is cut into equal slices, the bottom number (the denominator) tells you how many equal slices there are in all. The top number (the numerator) tells you how many of those slices you are talking about. So 3/8 means 3 slices out of 8 equal slices.
Three worked examples
Example 1 · One slice
1/4 of a pizza cut into 4 equal slices is 1 slice. The other 3 slices are plain, and 1/4 + 3/4 = 4/4, which is the whole pizza.
Example 2 · More than one slice
For 3/8, top 3 of the 8 slices. The plain part is 8 − 3 = 5 slices, which is 5/8.
Example 3 · Almost the whole pizza
5/6 means 5 of 6 slices are topped. Only 1 slice is plain, so 5/6 + 1/6 = 6/6 = 1 whole pizza.
Three common mistakes
Swapping the two numbers. 2/3 is not 3 slices topped out of 2. The numerator (2) is the topped part. The denominator (3) is the total number of slices.
Counting the plain slices. The fraction describes the topped slices only. For 2/3, top 2 slices, not 1.
Thinking a bigger bottom number means a bigger fraction. 1/8 is smaller than 1/4, because cutting a pizza into more slices makes each slice smaller.
How to use the game
Read the target above each pizza, for example "Build 5/6".
Tap a slice to top it, or drag the TOP chip onto a slice. Tap or drag again to remove the topping.
Watch the counter under the pizza, then press Check My Pizza. Any slices work, because all slices on a pizza are the same size.
If you are wrong, press Reset and try again. Try to build all 4 pizzas correctly.