Least Common Denominator

Find the LCD

100

Find the LCD for 1/2 and 1/4

4

200

What is the LCD for 1/2 and 2/12?

12

300

What is the LCD for 1/4 and 3/6?

12

400

What is the LCD for 7/9 and 5/6

18

500

What is the LCD for 8/11 and 4/7?

77

Find the LCD #2

100

Find the LCD for 2 1/6 + 1 5/9

18

200

Find the LCD for 1 1/5 + 2 3/6

4

300

Find the LCD for 2 5/8 + 1 1/5

40

400

Find the LCD for 5 1/7 + 2 1/6

42

500

Find the LCD for 8 2/9 + 5 1/4

36

LCD Questions

100

List the multiples of 4 and 7 and find the LCD.

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

7, 14, 21, 28, 35

LCD:28

200

What is the process for finding a common denominator for two unlike fractions?

Answers will vary

300

What does LCD stand for?

Lowest Common Denominator

400

List the first six multiples for 7

7, 14, 21, 28, 35, 42

500

Write the least common multiple for the numbers: 6, 8

24

Random

100

List the first 4 multiples of 10

10, 20, 30, 40

200

Which number is located on top in the fraction?

Numerator

300

If a fraction + fraction has a common denominator, it is called what?

Like fractions

400

What is the number called on the bottom of the fraction?

Denominator 

500

If a fraction + fraction do not have a common denominator, it is called what?

unlike fractions 

Find the LCD #3

100

Find the LCD for 4 1/3 + 1 5/9

9

200

Find the LCD for 7  5/6 + 6  4/5

30

300

Find the LCD for 3  6/8 + 1 3/5

40

400

Find the LCD for 2  7/8 + 6  5/9

72

500

Find the LCD for 8  1/11 + 9  5/12

132