Mastering Integer Addition and Subtraction

This video tutorial from Mumu Math explains how to add and subtract integers. It covers the rules for adding integers with the same and different signs, and how to handle subtraction by converting it to addition. The video provides examples to illustrate these concepts, helping viewers understand the process of determining the sign of the result based on the absolute values of the numbers involved.

What should you do if the problem is addition and the signs are the same?

• Add the absolute values and give the sum the sign of the addends

• Subtract the absolute values

• Ignore the signs and add the numbers

• Change the signs to their opposites

If the problem is addition but the signs are different, what is the next step?

• Add the absolute values

• Subtract the smaller absolute value from the larger one

• Change the signs to their opposites

• Multiply the absolute values

When dealing with subtraction, what is the first step?

• Add the numbers directly

• Change the subtraction sign to addition

• Ignore the signs

• Multiply the numbers

After changing the subtraction sign to addition, what should you do next?

• Add the numbers directly

• Ignore the signs

• Multiply the numbers

• Change the sign of the number behind the subtraction sign to its opposite

In the example of adding -5 and 2, what is the result?

• 7

• 3

• -3

• -7

What is the result of subtracting 7 - 3?

• 1

• 3

• 4

• 10

In the example of 6 - 1, what is the result and its sign?

• 5, positive

• 7, positive

• 5, negative

• 7, negative

What is the result of adding 12 and 5?

• 17, negative

• 17, positive

• 7, positive

• 7, negative

In the example of 8 + (-4), what is the result?

• 12

• 4

• -4

• 8

What is the sign of the result when adding 8 and -4?

• Positive

• Negative

• Zero

• Undefined