Enter Title

Vocab

100

Denominator

the bottom number in a fraction representing how many pieces in the whole

200

numerator

the top number in a fraction representing the part of the whole

300

reciprocal

the inverse (flip) of a fraction 

400

benchmark

marks on a number line to aid in estimating (most commonly: 0, 1/2, 1)

500

standard measurements

pounds, inches, feet, ounces etc (USA) 

Solve

100

What is the reciprocal of 3/4?

4/3

200

4/5 x 6/10 

24/50 --> 12/25

300

3/7  /  4/5 

3/7 x 5/4 = 15/28

400

I need 3.5 pounds of sugar. I need 18 ounces of flour. How may ounces of ingredients in total do I need. 

(3.5 x 16) + 18 = 56 + 18 = 74 oz

500

How many inches are in a foot? How many feet are in a yard?

12 and 3 

Formula

100

How do you ADD fractions?

use equivalent fractions so they have the same denominator then add the numerators (1/4 + 1/4 = 2/4)

200

How do you multiply fractions?

Multiply across then simplify if needed ( 2/3 x 1/5 = 2/15)

300

How do you divide fractions?

Multiply by the reciprocal of the 2nd factor. (1/2 divided by 3/6 --> 1/2 x 6/3 = 6/6 = 1) 

400

How do you subtract fractions?

make sure they have to same denominator and subtract the numerators 

Note: if you cannot subtract and you have a mixed number > borrow from the whole 

500

How many ounces are in a pound?

16