Chapter 1 Test - Adding, Subtracting Rational Numbers - 7th

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

What is the additive inverse of a number?

Back

The additive inverse of a number is the value that, when added to the original number, results in zero. For example, the additive inverse of 5 is -5.

Front

How do you add two negative numbers?

Back

To add two negative numbers, you add their absolute values and keep the negative sign. For example, (-4) + (-6) = -10.

Front

What does it mean to subtract a negative number?

Back

Subtracting a negative number is the same as adding its positive counterpart. For example, -5 - (-4) is the same as -5 + 4.

Front

How do you rewrite a subtraction problem as an addition problem?

Back

To rewrite a subtraction problem as an addition problem, change the subtraction of a negative number to addition. For example, -5.66 - (-4.1) becomes -5.66 + 4.1.

Front

What is the result of -4 - (-2)?

Back

The result of -4 - (-2) is -4 + 2, which equals -2.

Front

If Mia had $23.40 and spent $3.40, how do you calculate her remaining money?

Back

You subtract the amount spent from the total: $23.40 - $3.40 = $20.

Front

What is the equation to represent Ethan's total debt of $4 and $6?

Back

The equation is (-4) + (-6) = (-10).

Front

What is the value of the expression -5.66 + 4.1?

Back

The value of the expression -5.66 + 4.1 is -1.56.

Front

How do you find an equivalent expression for -4 - (-2)?

Back

You can find an equivalent expression by changing the subtraction of -2 to addition: -4 - (-2) = -4 + 2.