Proportions Percents and Equations

To solve proportions, you must...

• Multiply the numerators with the numerators

• Cross multiply

• Set equations equal

• Multiply by the denominator

Tags

CCSS.7.RP.A.2A

Translate: 
Four times a number plus six is 30.

• 4 + 6 = 30

• 4x + 6 = 30

• x + 4 times 6 = 30

• 30 = 4x

Solve.
(2x - 3) / 4  = 9

• x = 24

• x = 12

• x = 17.5

• x = 19.5

Tags

CCSS.7.EE.B.4A

Which proportion matches the following:

What is 90% of 250?

Tags

CCSS.6.RP.A.3C

• 4
• 44
• -4
• -44

Tags

CCSS.7.EE.B.4A

Which of these is set up correctly for "What is 6% of 90"?

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Which of these is set up correctly for "Find 40% of the number 85"?

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Tags

CCSS.6.RP.A.3C

Which of these is set up correctly for "30 is what percent of 600"?

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Which of these is set up correctly for "What percent of 55 is 80"?

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There are 9 students in a classroom that play football, this is 37.5% of the class. How many students are in the class?

Set up a proportion to help you solve this problem.

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Tags

CCSS.7.RP.A.2C