USA 2 Review (Units 4 & 5)

Front

What is the difference between two numbers?

Back

The difference is the result of subtracting one number from another.

Front

What is the sum of 6 + 4 + 2?

Back

The sum is 12.

Front

Which equation can be used to find the missing number in □ = 10 – 2?

Back

The equation □ + 2 = 10 can be used.

Front

What does the term 'sum' refer to in mathematics?

Back

The sum refers to the result of adding two or more numbers together.

Front

How do you represent subtraction in an equation?

Back

Subtraction can be represented using the minus sign (-).

Front

What is the result of 10 - 4?

Back

The result is 6.

Front

If you have 3 gray counters on one side of a scale, how many are needed on the other side to balance it?

Back

You need 3 gray counters on the other side to balance the scale.

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions.

Front

How can you express the equation '10 = □ + 2' in a different form?

Back

You can express it as '□ = 10 - 2'.

Front

What is the purpose of using variables in equations?

Back

Variables are used to represent unknown values in equations.