Solve for the unknown number

Solve for the unknown number

Assessment

Flashcard

Mathematics

1st Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the process to solve for an unknown number in an equation?

Back

To solve for an unknown number, isolate the variable on one side of the equation by performing inverse operations (addition, subtraction, multiplication, or division) to both sides.

2.

FLASHCARD QUESTION

Front

What is the inverse operation of addition?

Back

The inverse operation of addition is subtraction.

3.

FLASHCARD QUESTION

Front

What is the inverse operation of subtraction?

Back

The inverse operation of subtraction is addition.

4.

FLASHCARD QUESTION

Front

If you have the equation x + 5 = 12, how do you find x?

Back

Subtract 5 from both sides: x = 12 - 5, so x = 7.

5.

FLASHCARD QUESTION

Front

In the equation x - 3 = 9, what is the first step to solve for x?

Back

Add 3 to both sides to isolate x: x = 9 + 3, so x = 12.

6.

FLASHCARD QUESTION

Front

What is the value of x in the equation 18 - x = 10?

Back

To find x, subtract 10 from 18: x = 18 - 10, so x = 8.

7.

FLASHCARD QUESTION

Front

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

Back

Subtract 6 from both sides: x = 10 - 6, so x = 4.

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