Percent Proportions

Percent Proportions

Assessment

Flashcard

Mathematics

7th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a percent proportion?

Back

A percent proportion is a way to express a part of a whole as a percentage. It is often used to compare a part to the total amount.

2.

FLASHCARD QUESTION

Front

How do you calculate the percentage of a quantity?

Back

To calculate the percentage of a quantity, divide the part by the whole and then multiply by 100. Formula: (Part/Whole) x 100.

3.

FLASHCARD QUESTION

Front

If 30% of a collection is a certain number, how do you find the total collection size?

Back

To find the total collection size, divide the number of items that represent 30% by 0.30. Formula: Total = Part / (Percentage/100).

4.

FLASHCARD QUESTION

Front

In Russell's collection of 1,000 pennies, how many are dated before 1980 if 30% are dated before 1980?

Back

300 pennies are dated before 1980 (30% of 1000 = 0.30 x 1000 = 300).

5.

FLASHCARD QUESTION

Front

If 40% of Russell's pennies are dated from 1980 to 2000, how many pennies does that represent?

Back

400 pennies are dated from 1980 to 2000 (40% of 1000 = 0.40 x 1000 = 400).

6.

FLASHCARD QUESTION

Front

How do you find the remaining percentage of a collection?

Back

To find the remaining percentage, subtract the sum of known percentages from 100%. For example, if 30% and 40% are known, the remaining percentage is 100% - (30% + 40%) = 30%.

7.

FLASHCARD QUESTION

Front

How many pennies in Russell's collection are dated after 2000 if 30% are before 1980 and 40% are from 1980 to 2000?

Back

300 pennies are dated after 2000 (1000 - (300 + 400) = 300).

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