Add and subtract rational numbers

Front

What are rational numbers?

Back

Rational numbers are numbers that can be expressed as a fraction, where both the numerator and the denominator are integers, and the denominator is not zero.

Front

What is the rule for adding two negative rational numbers?

Back

When adding two negative rational numbers, the result is also a negative number.

Front

What is the rule for adding a positive and a negative rational number?

Back

When adding a positive and a negative rational number, subtract the absolute values and take the sign of the number with the larger absolute value.

Front

How do you subtract rational numbers?

Back

To subtract rational numbers, add the opposite of the number being subtracted.

Front

What is the result of -6.5 + (-0.5)?

Back

-7

Front

What is -1/3 + (-1/6)?

Back

-1/2

Front

What is -40 + 15.05?

Back

-24.95

Front

If the temperature was 3°C and it dropped by 7.5°C, what is the new temperature?

Back

-4.5°C

Front

What is the sum of two negative fractions, -1/4 and -1/2?

Back

-3/4

Front

What is the difference between -5 and -3?

Back

-2