Add and Subtract Whole Numbers

The order in which we add numbers won't change the sum.
Ex: 25+12 = 12+25 

• Associative Property of Addition

• Commutative Property of Addition

• Identity Property of Addition 

• Adding rules

Tags

CCSS.1.OA.B.3

The amount that has not been identified.  

• unknown

• question

• variable

• equation

Tags

CCSS.6.EE.B.6

A sentence with an equal sign to show that two expressions are equal.  

• variable

• unknown

• equation

• difference

Tags

CCSS.6.EE.A.2C

The grouping of addends won't change the sum. Ex: 5 + (2+4) = (5+2) + 4 Hide answers

• Associative Property of Addition 

• Commutative Property of Addition

• Identity Property of Addition 

• Addition rules

Tags

CCSS.1.OA.B.3

A letter or symbol used to represent an unknown quantity.  

• difference

• variable

• unknown

• picture

Tags

CCSS.6.EE.B.6

The first number in a subtraction sentence; The amount from which we are subtracting.  

• minuend

• difference

• addend

• subtrahend

Tags

CCSS.5.NBT.B.6

CCSS.6.NS.B.2

The number that is subtracted from another number.  

• minuend

• subtrahend

• addend

• difference

When you add 0 to any number, that number doesn't change.
0+100 = 100 

• Commutative Property of Addition 

• Identity Property of Addition 

• Addition rules

• Associative Property of Addition

Tags

CCSS.1.OA.B.3

The answer to a subtraction problem.  

• product

• sum

• quotient

• difference

Tags

CCSS.2.NBT.B.5

CCSS.1.NBT.C.4