Fractions

What is the LCM?

100

What is the LCM of 2/3 and 5/8?  

24

200

What is the LCM of 7/21 and 1/42? 

42

300

What is the LCM for 4/5, 6/15, and 2/20?

60 

400

Find the LCM of 5/12 and 7/18. Which fraction is larger? 

The LCM is 36. So, 15/36 and 14/36 which means that 5/12 is larger. 

500

Which fraction is larger? 7/17 or 1/51? 

7/17

Add Me

100

1/2 + 1/3 + 5/6

10/6 or 1 and 2/3

200

7/14 + 7/10 

84/70

300

If I eat 1/2 a pizza and then my sister eats 1/2 a pizza how much pizza did we eat in total? 

1 pizza (1/2 + 1/2 = 1) 

400

2 + 2/7

16/7 

500

Spongebob ran 1/2 a km. Patrick ran 1/3 a km. How many kms did they run in total. 

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

Subtract Me

100

7/9 - 9/9

-2/9 

200

3/5 - 4/15 

5/15 or 1/3

300

1 - 3/5 

2/5

400

I had 1 bar of chocolate. My sister steals 3/10 pieces. How much chocolate do I have left? 

7/10 because (10/10 - 3/10) 

500

2 - 4/5 - 13/15

5/15 or 1/3 

Divide Me

100

7/2 : 3/2 

14/6 or 7/3 

200

-1/3 : -1/2 

+2/3 

300

3/4 : 12 

1/16

400

12/5 : 18/15

2 

500

(-3) : 24/8 

-1 

Multiply Me

100

1/4 • 3/8

3/32

200

10/3 • 3/5 

2

300

-(14/2) • -(1/1)

+7

400

2/3 • 1/4 • 24/2 

2 

500

-1/4 • 7/2 • 2/7 

-1/4