Front

What is the equation to find the missing number in the expression _ + 7 = 10?

Back

The missing number is 3, because 3 + 7 = 10.

Tags

CCSS.1.OA.A.1

Front

How do you solve the equation _ + 6 = 10?

Back

Subtract 6 from both sides to find that _ = 4.

Tags

CCSS.6.EE.B.7

Front

What is the missing number in the equation 8 + _ = 10?

Back

The missing number is 2, because 8 + 2 = 10.

Tags

CCSS.1.OA.A.1

Front

What is the solution to the equation _ + 4 = 10?

Back

The missing number is 6, because 6 + 4 = 10.

Tags

CCSS.1.OA.D.8

Front

How do you find the missing number in the equation _ + 1 = 10?

Back

Subtract 1 from both sides to find that _ = 9.

Tags

CCSS.1.OA.A.1

Front

What is the general method for solving equations of the form _ + x = y?

Back

Isolate the variable by subtracting x from y.

Tags

CCSS.6.EE.B.7

Front

If you have the equation _ + 5 = 10, what is the missing number?

Back

The missing number is 5, because 5 + 5 = 10.

Tags

CCSS.1.OA.A.1

Front

How can you check your solution for the equation _ + 3 = 10?

Back

Substitute your answer back into the equation to see if it holds true.

Tags

CCSS.6.EE.B.5

Front

What is the missing number in the equation 10 - _ = 4?

Back

The missing number is 6, because 10 - 6 = 4.

Tags

CCSS.1.OA.D.8

Front

What is the principle behind solving for a missing number in an addition equation?

Back

The principle is to isolate the variable by performing inverse operations.

Tags

CCSS.2.OA.A.1