Grade 3 · Maths · Lessons
Three of those parts
🍕pizza🍫bar🎨shaded➗fraction
Parts of a whole.The big ideaThe bottom number counts the equal parts. The top number counts the parts you take.
How it works
The bottom number counts the equal parts. The top number counts the parts you take.
3/8 means 3 of 8 equal parts.
Equal parts are the same size.
Example 1: Shade a fourth
- A bar has 4 equal parts. Shade one fourth.
- Shade one part from the left.
- 1 of 4 parts is 1/4.
Example 2: Read a bar
- A bar has 8 equal parts and 3 are shaded.
- The bottom is 8 and the top is 3.
- The fraction is 3/8.
Example 3: One sixth
- A bar has 6 equal parts and 1 is shaded.
- The bottom is 6 and the top is 1.
- The fraction is 1/6.
Words to know
- numerator
- The top number.
- denominator
- The bottom number.
Watch out
- The bottom counts all the equal parts.
- The top counts the shaded parts.
- Parts must be equal.
Try it
- A bar has 5 equal parts and 2 shaded. What fraction?
- What does the bottom number count?
- What does the top number count?
- Shade 3/4 of a bar. How many of its 4 parts do you shade?
Answers: 1. 2/5 · 2. all the equal parts · 3. the shaded parts · 4. 3
For grown-upsCut a chocolate bar into equal squares and name the fraction you eat.