Vocabulary:

whole

Every piece

part

One or more piece of something

numerator

The top number in a fraction.

Shows how many parts we have.

(The bottom number is the Denominator and shows how many equal parts the item is divided into.)

denominator

The bottom number in a fraction.

Shows how many equal parts the item is divided into.

addition

Addition is finding the total, or sum, by combining two or more numbers.

Example: 5 + 11 + 3 = 19 is an addition

subtraction

Taking one number away from another.

If you have 5 apples and you subtract 2, you are left with 3.

The symbol of subtraction is −

Example: 5 − 2 = 3

multiplication

The basic idea of multiplication is repeated addition.

For example: 5 × 3 = 5 + 5 + 5 = 15

But as well as multiplying by whole numbers, we can also multiply by fractions, decimals and more.

For example 5 × 3½ = 5 + 5 + 5 + (half of 5) = 17.5

division

Division is splitting into equal parts or groups. It is the result of "fair sharing". Example: there are 12 chocolates, and 3 friends want to share them, how do they divide the chocolates? Answer: They should get 4 each. We use the ÷ symbol, or sometimes the / symbol to mean divide: 12 / 3 = 4 12 ÷ 3 = 4

fraction

Part of a whole.
• the bottom number (the denominator) says how many parts the whole is divided into
• the top number (the numerator) says how many parts we have.

General 5th grade math vocabulary:

http://iusd.org/student_resources/documents/5thGradeMathCoreVocabulary7-12-08.pdf

http://www.mathsisfun.com/definitions/letter-d.html

Fraction games:

http://www.internet4classrooms.com/skill_builders/fractions_percent_math_fifth_5th_grade.htm

Books and websites that could help:

http://eduplace.com/math/mw/g_5.html

http://www.willoughby-eastlake.k12.oh.us/classroom/technology/5th_%20Grade_%20Math.htm

http://www.teacherweb.com/OH/AdenaLocalSchools/MrSpriggs5thGradeMath/h0.aspx