1. Create a common denominator 2. Add/subtract the numerators 3. Simplify

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How do you multiply fractions?

1. Multiply the denominator 2. Multiply the numerator

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How do you divide fractions?

1. Flip the first fraction upside-down 2. Multiply them

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How do you compare ratios?

By writing them as unit ratios

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What is a unit ratio?

Where one of the numbers is 1

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What is direct proportion?

When, as one quantity is multiplied by a number, n, so is the other

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What is simple interest?

When you multiply by the same amount of interest each year

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How do you calculate a percentage change?

percentage change = actual change / original amount x 100

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How do you write recurring decimals as fractions?

1. Call the recurring decimal n 2. Multiply the recurring decimal by 10 (/100 etc.) to shift the sequence to 10n 3. Subtract n from 10n (this makes all numbers after the decimal point 0) 4. This gives you 9n, so divide by 9 to solve the equation

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What is VAT?

Value Added Tax, charged at 20% on most goods and services

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What does depreciate mean?

It loses value

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Other cards in this set

Card 2

Front

How do you add/subtract fractions?

Back

1. Create a common denominator 2. Add/subtract the numerators 3. Simplify

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