Unit Fractions: 1/2, 1/3, 1/4, 1/6, and 1/8
Naming one equal part of a whole
Unit Fractions: 1/2, 1/3, 1/4, 1/6, and 1/8
Naming one equal part of a whole
Math - Grade 2-3
- 1
A sandwich is cut into 2 equal pieces. You eat 1 piece. What unit fraction of the sandwich did you eat?
The bottom number tells how many equal pieces are in the whole.
You ate 1/2 of the sandwich because 1 out of 2 equal pieces was eaten. - 2
A rectangle is divided into 3 equal parts. One part is shaded. Write the unit fraction that shows the shaded part.
The shaded part is 1/3 of the rectangle because 1 out of 3 equal parts is shaded. - 3
A pie is cut into 4 equal slices. What fraction names one slice?
One out of four equal parts is called one fourth.
One slice is 1/4 of the pie because the whole pie is divided into 4 equal slices. - 4
A granola bar is divided into 6 equal sections. Mia breaks off 1 section. What unit fraction of the bar did Mia break off?
Mia broke off 1/6 of the granola bar because she took 1 of the 6 equal sections. - 5
A paper strip is divided into 8 equal parts. One part is colored blue. Write the fraction for the blue part.
Count the total number of equal parts for the denominator.
The blue part is 1/8 of the paper strip because 1 out of 8 equal parts is colored. - 6
Fill in the blank: In the fraction 1/4, the 4 tells how many equal parts are in the whole. The whole has blank equal parts.
The whole has 4 equal parts because the denominator in 1/4 is 4. - 7
Fill in the blank: One equal part of a whole divided into 3 equal parts is called blank.
Use the denominator 3 to name the fraction.
One equal part of a whole divided into 3 equal parts is called 1/3 or one third. - 8
Which unit fraction is larger: 1/2 or 1/8? Explain how you know.
Think about sharing one cookie with 2 people or with 8 people.
1/2 is larger because a whole divided into 2 equal parts has bigger pieces than a whole divided into 8 equal parts. - 9
Which unit fraction is smaller: 1/3 or 1/6? Explain how you know.
1/6 is smaller because a whole divided into 6 equal parts has smaller pieces than a whole divided into 3 equal parts. - 10
Look at a circle divided into 6 equal slices. If 1 slice is shaded, what unit fraction is shaded?
The numerator is 1 because only one slice is shaded.
The shaded part is 1/6 of the circle because 1 of the 6 equal slices is shaded. - 11
A square is split into 4 equal smaller squares. One smaller square is shaded. What fraction of the large square is shaded?
The shaded part is 1/4 of the large square because 1 of the 4 equal smaller squares is shaded. - 12
Order these unit fractions from largest to smallest: 1/2, 1/4, 1/8.
For unit fractions, the smaller denominator makes the larger piece.
The fractions from largest to smallest are 1/2, 1/4, and 1/8 because fewer equal parts make larger pieces. - 13
Order these unit fractions from smallest to largest: 1/3, 1/6, 1/2.
The fractions from smallest to largest are 1/6, 1/3, and 1/2 because more equal parts make smaller pieces. - 14
A ribbon is cut into 8 equal pieces. Sam uses 1 piece. Lee says Sam used 1/6 of the ribbon. Is Lee correct? Explain.
Check how many equal pieces the whole ribbon has.
Lee is not correct. Sam used 1/8 of the ribbon because the ribbon was cut into 8 equal pieces and Sam used 1 piece. - 15
Draw or describe a shape that shows 1/3. Make sure the parts are equal.
A correct drawing or description shows one whole divided into 3 equal parts with 1 part shaded or chosen. That represents 1/3.