Adding and Subtracting Rational Numbers

Front

What are rational numbers?

Back

Rational numbers are numbers that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

How do you add two rational numbers with the same sign?

Back

When adding two rational numbers with the same sign, add their absolute values and keep the common sign.

Front

How do you add two rational numbers with different signs?

Back

When adding two rational numbers with different signs, subtract the smaller absolute value from the larger absolute value and take the sign of the number with the larger absolute value.

Front

What is the result of -5.66 - (-4.1)?

Back

The result is -5.66 + 4.1 = -1.56.

Front

What is the result of -7 - 2?

Back

The result is -9.

Front

What is the result of -23.4 - 3.4?

Back

The result is -26.8.

Front

What do you do when adding decimals with different signs?

Back

Subtract the smaller absolute value from the larger absolute value and take the sign of the larger number.

Front

What is the first step in subtracting rational numbers?

Back

Rewrite the subtraction as addition of the opposite.

Front

What is the opposite of a rational number?

Back

The opposite of a rational number is the same number with the opposite sign.

Front

How do you convert a subtraction problem into an addition problem?

Back

Change the subtraction to addition by taking the opposite of the second number.