Is 75 percent good in grade 9

Simple percentage tasks

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.

How to calculate percentages in your head:
1. Convert the percentage to a fraction.
2. Use the fraction to calculate the percentage.

The most important percentages

These percentages are easy to calculate with in your head.

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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