Fraction Jeopardy - Denominator Showdown

What’s the Denominator? (Least Common Denominators)

1

Least common denominator for

1/3 and 1/4?

12 

3: 3, 6, 9, 12

4: 4, 8, 12

2

Least common denominator for

2/5 and 1/3?

15 

5: 5, 10, 15, 20

3: 3, 6, 9, 12, 15, 18

3

Least common denominator for 

5/6 and 1/8?

24 

6: 6, 12, 18, 24, 30

8: 8, 16, 24, 32

4

Least common denominator for

2/9 and 3/4?

36 

9: 9, 18, 27, 36

4: 4, 8, 12, 16, 20, 24, 28, 32, 36

Equivalent Exchange (Rewrite as Equivalent Fractions)

1

Rewrite 1/2 with denominator 8

4/8

2

Rewrite 2/3 with denominator 12

8/12

3

Rewrite 3/5 and 1/2 with common denominator 10

6/10 and 5/10

4

Rewrite 3/4 and 5/6 with common denominator 12

9/12 and 10/12

Add It Up! (Adding Unlike Denominators)

1

1/2 + 1/4 = ?

2/4 + 1/4 = 3/4

2

2/3 + 1/6 = ?

4/6 + 1/6 = 5/6

3

3/5 + 1/2 = ?

6/10 + 5/10 = 11/10 or 1 1/10

4

7/8 + 2/3 = ?

21/24 + 16/24 = 37/24 or 1 13/24

Subtract & Solve (Subtracting Unlike Denominators)

1

3/4 – 1/2 = ?

3/4 – 2/4 = 1/4

2

5/6 – 1/3 = ?

5/6 – 2/6 = 3/6

3

5/8 – 1/4 = ?

5/8 – 2/8 = 3/8

4

7/9 – 1/6 = ?

14/18 – 3/18 = 11/18

Word Problem Warriors (Story Problems)

1

Kendra baked 1/2 of a pie and ate 1/4. How much pie is left?

1/2 – 1/4 = 2/4 – 1/4 = 1/4

2

Ryan drank 2/3 of a bottle of juice in the morning and 1/6 in the afternoon. How much did he drink total?

2/3 + 1/6 = 4/6 + 1/6 = 5/6

3

Maya ran 5/8 mile and her brother ran 1/4 mile. How much farther did Maya run?

5/8 – 1/4 = 5/8 - 2/8 = 3/8

4

A recipe calls for 3/4 cup sugar and 2/3 cup flour. How much more sugar than flour is used?

3/4 – 2/3 = 9/12 – 8/12 = 1/12