Rational Number Operations

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 product of two negative numbers?

Back

The product of two negative numbers is always positive.

Front

What is the sum of a positive number and a negative number?

Back

The sum of a positive number and a negative number depends on the absolute values of the numbers. If the positive number is larger, the result is positive; if the negative number is larger, the result is negative.

Front

Calculate: (-2)(-11)

Back

22

Front

Calculate: -2 + 4

Back

2

Front

Calculate: 3 + -7

Back

-4

Front

Calculate: 7.9 + 18.72

Back

26.62

Front

If a sheep eats ⅙ of a bale of hay a day, how many sheep can be fed off of 2 bales of hay?

Back

12 sheep

Front

What is the rule for adding 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

What is the rule for adding 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.