Adding Rational Numbers

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

How do you add two negative rational numbers?

Back

To add two negative rational numbers, you add their absolute values and keep the negative sign. For example, -2 + (-3) = -(2 + 3) = -5.

Front

What is the sum of -2.61 and -6.88?

Back

-9.49

Front

How do you add a positive and a negative rational number?

Back

Subtract the absolute values and take the sign of the number with the larger absolute value. For example, 5 + (-3) = 5 - 3 = 2.

Front

What is the sum of -1\frac{1}{5} and -\frac{3}{5}?

Back

-1\frac{4}{5}.

Front

What is the result of -28 + (-8)?

Back

-36.

Front

What is the sum of 9 and -6.73?

Back

2.27.

Front

What is the sum of -87 and -36?

Back

-123.

Front

What is the absolute value of a number?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, | -5 | = 5.

Front

What does it mean to combine like terms in addition?

Back

Combining like terms means to add or subtract terms that have the same variable raised to the same power. For example, 2x + 3x = 5x.