Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Percentage Decrease |
Grade: 8-a Lesson: S2-L4 |
Explanation: The best way to understand algebra is by looking at some examples. Take turns and read each example for easy understanding. |
Examples:
Find 75 was increased by 6%.
Step 1a
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Firstly, the percent of fractional multiple. \$6% of 75\$ |
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Explanation: Here \$6% \times 75\$. |
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Step 1b
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The percentage sign % means percent, equivalent to the fraction of \$1/100\$. |
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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,\$(6\times75)/100\$ = \$4.5\$ |
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Explanation: After performing the calculation, the result is \$4.5\$. |
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Step 1d
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Subtract the result from 1c to the original value i.e., \$75 - 4.5\$ = \$70.5\$. |
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Explanation: The percentage value has decreased to \$70.5\$. |
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