Adding and Subtracting Integers

The video tutorial explains how to add and subtract real numbers, focusing on three examples. It covers the concept of subtracting as adding the opposite and provides rules for handling numbers with the same or different signs. The tutorial demonstrates how to use absolute values to simplify calculations and determine the sign of the result based on the original numbers.

What does subtracting a number mean in terms of addition?

• Adding the same number

• Adding the opposite of the number

• Subtracting the opposite of the number

• Multiplying by the opposite of the number

When adding two numbers with the same sign, what should you do?

• Add their absolute values and use the opposite sign

• Subtract the smaller absolute value from the larger

• Add their absolute values and use the common sign

• Subtract their absolute values

How do you determine the sign of the result when adding two numbers with different signs?

• Always use a negative sign

• Use the sign of the larger number

• Always use a positive sign

• Use the sign of the smaller number

In the example 5 + (-8), what is the result?

• -13

• 13

• -3

• 3

What is the first step in solving 5 + (-8) using the rule for different signs?

• Add the numbers directly

• Subtract 5 from 8

• Add their absolute values

• Subtract 8 from 5

In the example 5 + (-8), which number dictates the sign of the result?

• The smaller absolute value

• The larger absolute value

• -8

• 5

In the example -12 + (-6), what is the result?

• -18

• 6

• 18

• -6

When adding -12 and -6, what is the first step?

• Subtract their absolute values

• Multiply their absolute values

• Add their absolute values

• Ignore the signs

In the example -12 + (-6), which sign is used for the result?

• Negative

• Zero

• Opposite of the original signs

• Positive

What is the result of adding two numbers with the same sign?

• A negative number

• A number with the opposite sign of the originals

• A positive number

• A number with the same sign as the originals