Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Percentage Increase |
Grade: 8-a Lesson: S2-L3 |
Explanation: The best way to understand algebra is by looking at some examples. Take turns and read each example for easy understanding. |
Examples:
Find 100 was increased by 9%.
Step 1a
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Firstly, the percent of fractional multiple. \$9% of 100\$. |
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Explanation: Here \$9% \times 100\$. |
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Step 1b
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The percentage sign % means percent, equivalent to the fraction of 1/100 \$(9/100) \times 100\$. |
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Explanation: In this step, drop the % symbol and divide by 100 to convert a percentage into a fraction number. |
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Step 1c
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After simplification,\$(9\times\cancel100^1)/\cancel100^1\$ = 9. |
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Explanation: After performing the calculation, the result is 9. |
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Step 1d
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Add the result from 1c to the original value i.e.,100 + 9 = 109. |
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Explanation: The percentage value has increased to 109. |
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