Math 2.NR.2.1 Vocabulary Words

What are Fact Families?

• a group of math facts that use the same set of numbers.

• numbers that have no relation

• all the numbers that look alike

• 4 numbers that you add together to get an answer

What is an unknown number?

• zero is an unknown number

• A number that has no friends

• A number we do not know

• numbers that are subtracted

What is a SUM?

• when you subtract two or more numbers

• The total amount when adding two or more number

• what you see in a picture model

• an equation

What does it mean to SUBTRACT?

• To find the difference between two amounts

• To add two numbers together

• to show unknown numbers

• to fill in the blanks

To put together two amounts, means you will ______?

• divide

• subtract

• add

• multiply

Difference is....

• The result from subtracting

• adding two or more numbers

• two numbers connected by an equal sign

• bars to show unknown numbers

Using bars or boxes to show unknown numbers is called what strategy?​ (a)  

• Picture model
• Bar Model
• Equation

Using pictures to show to show number is what strategy?​ (a)  

• Picture Model
• Bar Model
• Number Line

A WAY to solve your math problem is called what?

• answers

• thinking

• strategy

• numbers

What is the value of two numbers connected by an EQUAL SIGN?

• equation

• strategy

• balance

• same number