operations on 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

What is the sum of two negative integers?

Back

The sum of two negative integers is always negative.

Front

What is the result of adding a positive integer to a negative integer?

Back

The result depends on the absolute values of the integers. If the positive integer is larger, the result is positive; if the negative integer is larger, the result is negative.

Front

What is the rule for subtracting negative numbers?

Back

Subtracting a negative number is the same as adding its positive counterpart.

Front

Calculate: (-18) + (-9)

Back

-27

Front

Calculate: (-12) - (-4)

Back

-8

Front

Calculate: (-25) ÷ (-5)

Back

5

Front

What is the overall change in field position if a football team gains 9 yards and then loses 22 yards?

Back

9 + (-22) = -13

Front

How do you find the total number of items left after selling some?

Back

Subtract the total number of items sold from the initial stock.

Front

If a shop had 1500 items and sold 732 spoons, 328 forks, and 83 knives, how many items are left?

Back

1500 - (732 + 328 + 83) = 357