Open Up - Grade 7 - Mathematics - Unit 4 - Lesson 6

For each diagram, decide if y is an increase or a decrease relative to x . Then determine the percent increase or decrease.

Draw diagrams to represent the following situations.

The amount of flour that the bakery used this month was a 40% increase relative to last month.

Draw diagrams to represent the following situations.

The amount of milk that the bakery used this month was a 75% decrease relative to last month.

Write each percent increase or decrease as a percentage of the initial amount. The first one is done for you.

This year, there was 40% more snow than last year.

Write each percent increase or decrease as a percentage of the initial amount. The first one is done for you.

This year, there were 25% fewer sunny days than last year.

Write each percent increase or decrease as a percentage of the initial amount. The first one is done for you.

Compared to last month, there was a 50% increase in the number of houses sold this month.

Write each percent increase or decrease as a percentage of the initial amount. The first one is done for you.

The runner’s time to complete this marathon was 10% less than the time to complete the last marathon.

The graph shows the relationship between the diameter and the circumference of a circle with the point

shown.

Find 3 more points that are on the line.

Priya bought x grams of flour. Clare bought \frac{3}{8} more than that. Select all equations that represent the relationship between the amount of flour that Priya bought, x, and the amount of flour that Clare bought, y.