# Is 75 percent good in grade 9

You can calculate some percentage problems very quickly and easily. You don't need a calculator.

Example:
Calculate 50% of 350.

50% is half.

As a fraction \$\$ 1/2 \$\$. This means, divide by 2.

350 \$\$:\$\$ 2 = 175

50% of 350 is 175.

1. Convert the percentage to a fraction.
2. Use the fraction to calculate the percentage.

### The most important percentages

percentage You reckon example
\$\$25% = 1/4\$\$ divide by 4 25% of € 800
calculate 800 \$\$: \$\$ 4 = 200
25% of € 800 is € 200.
\$\$75% = 3/4\$\$ divide by 4,
then times 3
75% of 32 €
calculate 32 \$\$: \$\$ 4 \$\$ * \$\$ 3 = 24
75% of € 32 is € 24.
\$\$ 33% approx 1/3 \$\$divide by 333% of 90 €
calculate 90 \$\$: \$\$ 3 = 30
33% of 90 € is 30 €.
\$\$10% = 1/10\$\$divide by 1010% of € 98
calculate 98 \$\$: \$\$ 10 = 9.8
10% of € 98 is € 9.80.
\$\$20% = 1/5 \$\$divide by 520% of 150 €
calculate 150 \$\$: \$\$ 5 = 30
20% of 150 € is 30 €.

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