Fractions

Question 1

Mixed number into improper fraction

Answer 1

Multiply the whole number by the denominator.
Add that number to the numerator.
Write that sum on top of the original denominator.

Question 2

Whole number or decimal into fraction

Answer 2

1. The “whole” number (eg. 4.2 would be the 4) stays the whole number.
2. The number after the decimal becomes the number as the numerator and the denominator is whatever place the number is in. (eg. 4.2 becomes 4 2/10.)

Question 3

dividing whole number by a fraction

Answer 3

multiply the whole number by the denominator

Question 4

multiplying whole number by a fraction

Answer 4

divide the whole number by the denominator

Question 5

dividing fractions by each other

Answer 5

KFC: Keep first fraction the same. Flip the second fraction. Change division symbol to multiplication.

Question 6

multiplying fractions by each other

Answer 6

1. Multiply numerators by each other, and denominators by each other, straight across.
2. Turn mixed numbers into improper fractions.
3. turn a whole number into a fraction (like if you’re multiplying by 2) into a fraction (2 = 2/1).

Question 7

improper fraction into mixed number

Answer 7

1. divide numerator by denominator.
2. the whole number that you get is the “whole” number of the mixed number.
3. the remainder is the numerator
4. denominator stays the same