Percentage Calculations Using a Calculator

This video tutorial explains how to calculate percentages using a calculator. It begins with an introduction to percentages and suggests reviewing non-calculator methods. The video then provides three examples: calculating 47% of 900, 12.5% of 52, and 0.3% of 80. Each example follows a consistent method: divide the number by 100 to find 1%, then multiply by the desired percentage. The tutorial emphasizes the importance of using a calculator for efficiency.

Why is it important to understand percentages without a calculator?

• All of the above.

• Because it is required for higher-level exams.

• Because it helps in understanding the concept better.

• Because calculators are not always available.

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CCSS.6.RP.A.3C

What is the first step in calculating 47% of 900 using a calculator?

• Subtract 47 from 900.

• Add 900 and 47.

• Divide 900 by 100.

• Multiply 900 by 47.

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CCSS.6.RP.A.3C

After finding 1% of 900, what is the next step to find 47%?

• Subtract 47.

• Multiply by 47.

• Divide by 47.

• Add 47.

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CCSS.6.RP.A.3C

What is 47% of 900?

• 4230

• 900

• 47

• 423

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CCSS.6.RP.A.3C

What is the first step in calculating 12.5% of 52?

• Subtract 12.5 from 52.

• Add 52 and 12.5.

• Divide 52 by 100.

• Multiply 52 by 12.5.

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CCSS.6.RP.A.3C

What is 1% of 52?

• 0.52

• 0.052

• 5.2

• 52

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CCSS.6.RP.A.3C

What is 12.5% of 52?

• 0.65

• 6.5

• 65

• 5.2

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CCSS.6.RP.A.3C

What is the first step in calculating 0.3% of 80?

• Multiply 80 by 0.3.

• Subtract 0.3 from 80.

• Divide 80 by 100.

• Add 80 and 0.3.

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CCSS.6.RP.A.3C

What is 1% of 80?

• 0.08

• 8

• 0.8

• 80

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CCSS.6.RP.A.3C

What is 0.3% of 80?

• 0.24

• 2.4

• 24

• 0.024

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CCSS.6.RP.A.3C