Find Unknowns Using Proportions

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

Enter the missing numbers to create equivalent ratios. 
1 : 3
6 : 18
2 : _
4 : _

• 4 & 8
• 4 & 12
• 6 & 12
• 6 & 8

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 for the unknown in the equivalent ratios.
3/4 = 9/?

• 8
• 10
• 4
• 12

Tags

CCSS.6.RP.A.3A

You drive 25 miles in one hour. At this rate, how far will you drive in 3 hours?

• 25 miles
• 50 miles
• 125 miles
• 75 miles

Tags

CCSS.6.RP.A.3B

Solve for x:   x/4 = 6/8

• 4
• 2
• 3
• 10

Tags

CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the ratio to the picture shown, triangles to squares?

• 2:6
• 5:6
• 3:4
• 4:3

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

• 1
• 3
• 9
• 8

Tags

CCSS.4.NF.A.1

CCSS.5.NF.B.5B

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90

Tags

CCSS.7.RP.A.2B

Does the table represent a proportional relationship?

• Yes.
• No.

Tags

CCSS.7.RP.A.2A