The Number System - created from Mind Map

Seite 1

Mathematical Operations

There are only four!

Dvision

Division (÷ or /) is splitting into equal parts or groups.

Ex: 12 ÷ 3 = 4 12 / 3 = 4

12 is the dividend. 3 is the divisor. 4 is the quotient.

Multiplication

Multiplication (•) is repeated addition.

5 • 3 = 5 + 5 + 5 = 15

5 and 3 are factors. 15 is the product.

Addition

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

Ex: 5 + 3 + 2 = 10

5, 3, 2 are addends 10 is the sum or total

Subtration

Subtraction (-) is taking one number away from another.

5 − 2 = 3

5 is the minuend. 2 is the subtrahend. 3 is the difference.

Properties of Multiplication

Distributive

2(x+4)

2(x) + 2(4)

2x+8

Commutative

4 • 2 = 2 • 4

Associative

(2 • 3) 4 = 2 (3 • 4)

Multiplicative Inverse

8 • (1/8) = 1

Multiplicative Identity

5 • 1 = 5.

Properties of Addition

Additive Identity

5 + 0 = 5

Associative Property

(2 + 3) + 4 = 2 + (3 + 4)

Additive Inverse

5 - 5 = 0

Commutative

4+2 = 2+4