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How to find percent of a number using a decimal. Find 30% of 75.30 Step 1: Change the percent to a decimal. x75 Step 2: Change the “of” to a multiplication.

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Presentation on theme: "How to find percent of a number using a decimal. Find 30% of 75.30 Step 1: Change the percent to a decimal. x75 Step 2: Change the “of” to a multiplication."— Presentation transcript:

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3 How to find percent of a number using a decimal. Find 30% of 75.30 Step 1: Change the percent to a decimal. x75 Step 2: Change the “of” to a multiplication sign. Step 3: Multiply the decimal and whole number. Find 42% of 64 Find 10% of 80 Find 14% of 76 22.5

4 Now You Try! Find 12% of 50 Find 6% of 70 Find 76% of 140 Find 52% of 300 6 4.2 106.4 156

5 Work With A Partner You and your friend are buying concert tickets. The price you will pay for each ticket is 125% more than the original ticket price. If each ticket was $80, how much will you pay? How much will it cost for both tickets? How could you solve this problem using mental math?

6 Work With A Partner You and your partner go out to eat at a very nice restaurant. The bill comes and the total is $86.40. Your service was excellent so you want to leave a good tip. You decide to leave 20%. What is the dollar amount of your tip? What is your final total including your tip? Oh wait a minute, you just found a $10 off coupon if your pocket. You give it to your waiter and he adjusts your bill. You still want to leave a 20% tip. What is the dollar amount of your tip now and total bill.

7 Sum It Up Create a set of directions for your partner explaining how to find the percent of a number. Give examples and create your own word problem for your partner to solve. You may use color and illustrations to enhance your directions. Percent of a number

8 Thanks for purchasing my power point presentation. Please consider leaving a rating. Check out my other products too! Thanks, Math Central http://www.teacherspayteachers.com/Store/Math-Central http://math-central.blogspot.com/

9 How to find percent of a number using a fraction. Step 1: Change the percent to a fraction. Step2: Change the word “of” to a multiplication sign. Step 3: Write the whole number as a fraction. Step 4: Multiply Step 5: Divide

10 Lets Practice 1. Find 20% of 150 2. Find 25% 0f 250 3. Find 130% of 260 x 30 Or reduce to an equivalent fraction and solve. Cross cancel when you can

11 Now You Try! Find 32% of 50 16 Find 25% of 60 15 Find 43% of 630 270.9 Find 15% of 80 12


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