Math vocab

The order you add 2 numbers does not change the sum.

1+2=3

2+1=3

• Commutative Property

• Associative Property

• Identity Property

Tags

CCSS.1.OA.B.3

The grouping of addends doesn’t change the sum.

12+15=15+12

• Commutative Property

• Associative Property

• Identity Property

Tags

CCSS.1.OA.B.3

Any number plus zero is that number.

1+0=1

29+0=29

• Commutative Property

• Associative Property

• Identity Property

Tags

CCSS.1.OA.B.3

A number sentence containing an equal sign to show that both sides are equal.

2+a=5

6 - b=3

• Equation

• Variable

Tags

CCSS.6.EE.B.6

A letter or symbol used to represent an unknown number.

4+c=6

• Equation

• Variable

Tags

CCSS.6.EE.B.6