Solving Percent Problems

Solving Percent Problems

Multiple Select

Which methods could be used to solve this problem?

What is 20% of 200?

• Divide 200 by 0.2

• Since 20% is 1/5, you can divide 200 by 5.

• Multiply 0.2 by 200.

Multiple Select

Which methods could be used to solve this problem?

27 of the animals in a shelter are cats. If there are 90 animals in all, what percentage are cats?

• Divide 90 by 27.

• Write the ratio as a fraction, 27/90. Simplify to 3/10. Then, convert to a fraction over 100 to get the percentage.

• Write the ratio as a fraction, 27/90. Divide 27 by 90 and convert to a percent.

Multiple Select

Which methods could be used to solve this problem?

18 is 40% of what number?

• Divide 18 by 0.4

• Half those values to get 9 is 20%. Then, multiply those values by 5 to get the number that equals 100%.

• Multiply 18 by 0.4

Multiple Select

Which methods could be used to solve this problem?

Dorian has $300. He spent 5% of his money. How much did he spend?

• Multiply 300 by 0.05

• Divide 300 by 0.05

• 5% of 100 is 5. So, you can multiply 5 by 3 to get 5% of 300.

Multiple Select

Which methods could be used to solve this problem?

1/4 is 12.5% of what number?

• Divide 0.25 by 0.125

• Multiply 0.25 by 0.125

• 12.5% is 1/8, so you can multiply 1/4 by 8

Multiple Select

Which methods could be used to solve this problem?

18 is 75% of what number?

• Divide 18 by 0.75

• Multiply 18 by 0.75

• 18 is 75%,

  so

  6 is 25%,

  so

  24 is 100%

Multiple Select

Which methods could be used to solve this problem?

1.5 is what percent of 25?

• Divide 25 by 1.5

• Multiply 1.5 by 25

• Divide 1.5 by 25