Basic Math and Pre-Algebra: 1,001 Practice Problems For Dummies (+ Free Online Practice)
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Fractions are a common way of describing parts of a whole. They're commonly used for English weights and measures, especially for small measurements in cooking and carpentry. If you want to be proficient in basic math, and if you want to prepare for pre-algebra, you need to know the ins and outs of fractions.

  • Remember that the numerator of a fraction is the top number and the denominator is the bottom number.

  • The reciprocal of a fraction is that fraction turned upside-down.

  • To increase the terms of a fraction, multiply the numerator and denominator by the same number.

  • To reduce the terms of a fraction to lowest terms, divide both the numerator and denominator by the greatest possible number.

  • To simplify complex fractions, first simplify the numerator and denominator to two separate fractions; then change the problem to division.

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Mark Zegarelli is a math and test prep tutor and instructor in San Francisco and New Jersey. He is the author of Basic Math & Pre-Algebra For Dummies, SAT Math For Dummies, ACT Math For Dummies, Logic For Dummies, and Calculus II For Dummies.

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