Unit 04: Fractions and Problem Solving

Unit 05: Fractions and Problem Solving

Key Vocabulary

• reciprocal - The reciprocal of a number is 1 divided by the number

• simplify - To reduce a fraction to lowest terms

• simplest form - the numerator and denominator have no other common factors other than 1.

• benchmark - common numbers and fractions that we judge against. (example: 0, 1/2, 1 )

• compatible numbers - numbers that are easy to add, subtract, multiply, and divide.

• estimation - a rough calculation of something.

• front-end estimation - keep the front number and replace the rest of the numbers with zeros.

• rounding - make a number easier to add, subtract, multiply, and divide, but keeping it close to what it was. (see rounding rules.)

• terminating decimal - decimals that end

• repeating decimal - decimals that repeat forever