Adding and Subtracting within 1000

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Tags

CCSS.1.OA.A.1

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another.

Tags

CCSS.2.NBT.B.7

Front

What does it mean to solve a math problem?

Back

To solve a math problem means to find the answer or solution to the question being asked.

Front

If you have 23 fish and 12 are left, how do you find out how many jumped out?

Back

You subtract the number of fish left (12) from the total number of fish (23): 23 - 12 = 11.

Tags

CCSS.2.OA.A.1

Front

What is the equation for finding a missing number in addition?

Back

If you have an equation like 12 + __ = 36, you can find the missing number by subtracting 12 from 36.

Tags

CCSS.2.OA.A.1

Front

What is the equation for finding a missing number in subtraction?

Back

If you have an equation like 36 - __ - 12 = 0, you can find the missing number by adding 12 to the result and then subtracting from 36.

Tags

CCSS.2.OA.A.1

Front

What is the sum of 11 + 25 + 13 + 26?

Back

The sum is 75.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What does 'correct' mean in math?

Back

'Correct' means that the answer or solution is right and matches the expected result.

Tags

CCSS.6.NS.C.5

Front

What does 'incorrect' mean in math?

Back

'Incorrect' means that the answer or solution is wrong and does not match the expected result.

Tags

CCSS.1.OA.A.1

Front

How do you check if an addition problem is correct?

Back

You can check by adding the numbers again or by using subtraction to see if you get back to the original number.

Tags

CCSS.1.OA.A.1