Adding & subtracting 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 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, a - (-b) becomes a + b.

Front

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

Back

-5.66 + 4.1 = -1.56.

Front

What is the value of -3/4 - (-2/3)?

Back

-3/4 + 2/3 = -1/12.

Front

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

Back

When adding a positive and a negative rational number, subtract the smaller absolute value from the larger absolute value and keep the sign of the number with the larger absolute value.

Front

What is the result of 1/2 + (-3/4)?

Back

1/2 + (-3/4) = -1/4.

Front

What is the value of 18 - 23.2?

Back

18 - 23.2 = -5.2.

Front

How do you find the difference between two fractions?

Back

To find the difference between two fractions, find a common denominator, then subtract the numerators.

Front

What is the result of 7/10 - 9/10?

Back

7/10 - 9/10 = -1/5.

Front

What does it mean to have a negative result when adding or subtracting rational numbers?

Back

A negative result indicates that the value is less than zero, meaning the negative number has a greater absolute value than the positive number.