What is a number line?

A line that shows numbers in order, used to help with addition and subtraction.

What does the plus sign (+) mean?

It means to add numbers together.

What is a fact family?

A group of related addition and subtraction facts using the same numbers.

What is the commutative property of addition?

It means that changing the order of the numbers does not change the sum.

The total amount you get when you add two or more numbers.

A basic addition or subtraction problem that is often memorized.

What is the difference between addition and subtraction?

Addition combines numbers, while subtraction takes one number away from another.

To add a number to itself, like 4 + 4.

Flashcard

•

Mathematics

•

2nd Grade

•

Practice Problem

•

Hard

•

CCSS

1.OA.C.6, 1.OA.A.1, 2.MD.B.6

Standards-aligned

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15 questions

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FLASHCARD QUESTION

Front

What is 4 + 5?

Back

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

FLASHCARD QUESTION

Front

What is 8 + 8?

Back

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

FLASHCARD QUESTION

Front

What is 6 + 5?

Back

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

FLASHCARD QUESTION

Front

What is 9 + 9?

Back

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

FLASHCARD QUESTION

Front

What is 10 + 5?

Back

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

FLASHCARD QUESTION

Front

What is the sum of two numbers?

Back

The result of adding two numbers together.

Tags

CCSS.1.OA.A.1

FLASHCARD QUESTION

Front

What is addition?

Back

A mathematical operation where we combine two or more numbers to get a total.

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