Percent Change (Day 1)

Percent Change is a ratio that compares the ____________ to the _____________.

• New amount to Original amount

• Change amount to Original amount

• Change amount to New amount

• New amount to Original amount

Answer explanation

Percent Change = Change/Original

The population of fish in my pond went from about 25 to about 32. This will be a percent ___________

• Increase

• Decrease

• Original

• New

Answer explanation

The values went up, so a percent increase.

After practicing, Pat's race time went from 12½ mins to 11¾ mins. This will be a percent .......

• increase

• decrease

Answer explanation

The time went down, so a decrease.

A $175 coat was reduced to $150. Which set-up will find the percent change?

• 25/175

• 25/150

• 150/175

Answer explanation

Change/original

40 increases by 10 to 50. If 50 reduces by 10 to 40, is this the same percent change in each direction?

• Yes because the two numbers are the same

• No, because 10/40 is different to 10/50

• No, because 40/50 is different to 50/40

Answer explanation

when the change is the same, but the originals are different, then the percent is different.

How do you set up this question - What is 70% of 170?

How do you set up this question - What percent of 200 is 28?

How do you set up this question - 252 is 72% of what amount?

There are 40 students in a class and 30% of these students passed their history test. What number of these students passed the test?

What part of the percent proportion are you missing?

• Percent

• Part

• Whole

A baseball team played 30 games throughout their entire season. They won 24 of them. What percentage did they win?

What part of the percent proportion are you missing?

• Part

• Whole

• Percent