proportions and ratios

Write a ratio in simplest form:
12 CD's to 4 tapes

• 3/1
• 4/1
• 12/4
• 6/1

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Is this proportion equal?
1/3     4/12

• =
• ≠

Tags

CCSS.7.RP.A.2A

Is this proportion equal?
2/7     24/86

• =
• ≠

Tags

CCSS.7.RP.A.2A

Is this proportion equal?
1/3  5/6

• =
• ≠

Tags

CCSS.4.NF.A.2

Solve:
5/15  =  25/n

• 5
• 50
• 75
• 25

The cookie jar has six chocolate chip cookies and five oatmeal cookies. What is the ratio of oatmeal to chocolate chip cookies?

• 6:5
• 5:6
• 6:11
• 6:11

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

In my fish tank, the ratio of red fish to blue fish is 3:5. There are 20 blue fish. How many red fish are there?

• 18
• 12
• 4
• 15

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90

Tags

CCSS.7.RP.A.2B

Solve for x

• x=6
• x =1/6
• x = 7
• x=9

Tags

CCSS.6.EE.B.7

Solve the proportion.

• -3

• -1.5

• 2.1

• 9

Tags

CCSS.7.EE.B.4A