09.03 G2 Math Ch. 1 Vocab.

Is this an example of related facts?

• Yes

• No

• Maybe

• Not enough information

What is happening? (Choose two answers)

• Counting on

• Counting back

• Subtraction

• Addition

What are "addends?"

• On a number line, starting at a greater number and moving to a lower number.

• Any numbers being added together.

• Two addends that are almost the same.

• Addition & subtraction sentences that use the same numbers.

Which direction does the arrow go when you "count on?"

• up

• down

• left

• right

What does "difference" mean?

• The answer to a subtraction problem.

• The answer to an addition problem.

• To take away, take apart, or separate.

• The missing number in a number sentence.

What is a "fact family?"

• The answer to a subtraction problem.

• Addition and subtraction sentences that use the same numbers.

• On a number line, starting at a greater number and moving to a lower number.

• Any numbers being added together.

What is missing?

• The sum.

• The difference.

• 10

• 1

What does "add" mean?

• The answer to a subtraction problem.

• Two addends that are the same.

• To join together two sets find the total.

• The answer to an addition problem.

Which equation is an example of "doubles?"

• 1 + 2 = 3

• 5 + 8 = 13

• 3 + 3 = 6

• 9 + 2 = 11

What does "count back" mean?

• On a number line, starting at a lower number and moving to a greater number.

• Basic facts using the same numbers.

• Two addends that are almost the same.

• On a number line, starting at a greater number and moving to a lower number.