Virginia SOL Math / Grade 2 / Number & Number Sense
Fractions: Halves, Thirds & Fourths
What you'll learn
- Name and write fractions for equal parts of a whole or a set
- Represent one half, one third, and one fourth with models
- Compare the sizes of unit fractions
Words to know
- Fraction —
- a number that names equal parts of a whole
- Whole —
- one complete shape or group
- Equal parts —
- parts that are the same size
- One half (1/2) —
- one of two equal parts
- One fourth (1/4) —
- one of four equal parts
Why it matters Fractions help us share fairly and measure, like cutting a sandwich in half or giving each friend an equal piece.
Worked examples
Model ItI do
A circle is cut into 4 equal parts and 1 part is shaded. What fraction is shaded?
The whole has 4 equal parts, so 4 is on the bottom. One part is shaded, so 1 is on top. The shaded part is one fourth, written 1/4.
Try It TogetherWe do
There are 6 apples. If you take one third of them, how many do you take?
One third means we split the 6 apples into 3 equal groups. Each group has 2 apples, so one third of 6 is 2 apples.
Now YouYou do
A rectangle is split into 2 equal parts and 1 part is shaded. What fraction is shaded?
Count the equal parts and the shaded parts. Check your answer in the back of this chapter.
Practice
Mastered 0 of 11
Warm-up
Ease in with the basics.
1.How many equal parts are in one half of a shape?
2.A shape is split into 4 equal parts. What is one part called?
3.Are two parts equal if one is big and one is small?
On Level
The core Quick Check from the book.
1.What fraction is one of three equal parts?
2.How many fourths make one whole?
3.Which is bigger: one half or one fourth?
4.A pizza is cut into 2 equal slices. What is one slice called?
5.There are 8 crayons. How many is one half of them?
Challenge
Stretch your thinking.
1.A pan of brownies is cut into 8 equal pieces. What fraction is one piece?
2.There are 12 marbles. How many is one third of them?
3.Which is bigger: one sixth or one third?