Evaluating Sums of Integers

Front

Evaluate: 2 + -5

Back

-3

Front

The temperature was 98 degrees last Friday. Wednesday it was 24 degrees cooler. Which expression represents the relationship in the temperature between Friday and Wednesday?

Back

98 + (-24)

Front

Find the sum: 9 + -11

Back

-2

Front

Evaluate: -10 + 7

Back

-3

Front

A shark is swimming 45 feet below the surface of the ocean. A fish is swimming 13 feet below the shark. How far below the surface of the water is the fish?

Back

-58 feet

Front

What is the sum of two integers with different signs?

Back

The sum is found by subtracting the absolute values and taking the sign of the integer with the larger absolute value.

Front

Define 'integer'.

Back

An integer is a whole number that can be positive, negative, or zero.

Front

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

Back

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

Front

Evaluate: -3 + 5

Back

2

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value.