7th Grade Math Review

Front

What is the formula to calculate percentage decrease?

Back

Percentage Decrease = ((Original Value - New Value) / Original Value) * 100

Front

If a house sells for $250,000 and then for $210,000, what is the percentage decrease in price?

Back

16%

Front

What does it mean for two expressions to be equivalent?

Back

Two expressions are equivalent if they have the same value for all values of their variables.

Front

Simplify the expression: 6r - r + 8(15 - r) + 23 - 6.

Back

-3r + 137

Front

What is a graph?

Back

A graph is a visual representation of data that shows the relationship between different variables.

Front

What does the slope of a line represent in a graph?

Back

The slope represents the rate of change between the two variables.

Front

In a cooking scenario, if chicken loses 10% of its weight, how do you calculate the original weight needed to achieve a desired cooked weight?

Back

Original Weight = Desired Weight / (1 - Percentage Loss)

Front

If you want 1,170 grams of cooked chicken and it loses 10% of its weight, how much uncooked chicken do you need?

Back

1,300 grams

Front

What is the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction.

Front

What does the score of 2 represent in the context of John's and Kamira's game?

Back

The sum of John's score and Kamira's score.