Percent of Change
Similar Figures
Name the procedure
Writing Expressions
Word Problems
100

Liam decreased the amount of time it takes her to run a mile from 12 minutes to 9 minutes. What is the percent of change?

25%

100

See example 2

4 in

100

This procedure has 5 steps.... can you name the first three steps?

1. % to Decimal

2. Identify Keywords (+ or -)

3. x(+ or -) decimalx

100

A markdown of 60% on a winter coats that cost c dollars

c-0.6c or 0.4c

100

Sophia has 50% of her paycheck added to her saving account. She has \$215 added to her saving account last week. How much was her total check??

\$430

200

From \$20 to \$12

8 decrease

40%

200

See example 4

30 ft

200

Name all Steps of Bat & Ball

Step 1. Set it up

Step 2. SImplify

Step 3 Bat and Ball

200

Giving a waiter a 15% tip on the price of your m meal.

m+0.15m & 1.15m

200

In a certain school, there are 4 girls to every 5 boys. If there are 560 girls in the school, how many boys attend the school?

700 boys

300

From 80 calories to 60 calories

20 decrease

25%

300

Scale Factor  example 3

Scale Factor: 4

300

Percent of change procedure

FInd the change.

do change over original and set = to x over 100

simplify and do bat& ball

300

If you buy a shirt and there is an 8% sales tax on the shirt.

x+0.08x & 1.08x

300

The owner of a a shoe store buys second-hand shoes from customers for \$5.00 each. The Owner then resells them for 500% the amount he paid for them. What price is he selling the shoes for now?

\$25 per shoe

400

Elsa increased he math grade from 60% to 84%

Find the percent of change.

40%

400

Scale Factor Example 5

P to Q Divide by 3

Q to P Multiply 3

400

Keywords for +

(at least 3 need to match)

Sales Tax

tax

Raise

tip

growth

lengthen

400

A 6% tax on the final bill, b.

b+0.06b & 1.06b

400

The distance between Idea Edgemere and Idea Mesquite Hills is 120 Kilometers. There is approximately 4 kilometers in 3 miles. Which is the closets to the number of miles between these schools.

90 miles

500

From 120 points to 84 points.

36 decrease

30%

500

Scale Factor see example 8

C to D: multiply by 4

D to C: divide by 4

500

Keywords for -

(3 need to at least match)

Shorten

Markdown

discount

off

decrease

500

Jacqui and Mario go out to lunch. Their bill was "b" dollars and a 5% tax was added to the bill.

b+ 0.05b & 1.05b

500

There were 30 questions on the math exam. Victoria got 18 of the questions correct. What percent of the questions did VIctoria get?

60% questions correct