Adding Integers: Key Concepts and Examples

This video tutorial by Mr. J provides a quick review of how to add integers, focusing on both positive and negative numbers. It covers two examples: 12 plus negative 7 and negative 8 plus negative 10, demonstrating different methods to solve these problems, including using absolute values and mental math. The video concludes with a summary and links to additional resources for further learning.

What is the result of adding a positive and a negative integer with different absolute values?

• The sum is the difference of their absolute values with the sign of the larger absolute value.

• The sum is the addition of their absolute values.

• The sum is always negative.

• The sum is always positive.

How do you find the sum of two integers with different signs?

• Multiply their absolute values.

• Subtract the smaller absolute value from the larger and use the sign of the larger.

• Add their absolute values.

• Subtract their absolute values.

When adding a positive and a negative number, the result is determined by?

• The sign of the number with the smaller absolute value.

• The sign of the number with the larger absolute value.

• Always positive.

• Always negative.

What does the absolute value of a number represent?

• Its positive value.

• Its negative value.

• Its square root.

• Its distance from 0 on the number line.

In the context of adding integers, when do you subtract absolute values?

• Never.

• When integers have different signs.

• When both integers are negative.

• When both integers are positive.

What mental math method can be used for adding 12 and -7?

• Thinking of it as 12 minus 7.

• Multiplying both numbers.

• Adding both numbers as positives.

• Dividing 12 by -7.

What is the sum of two negative integers?

• The difference of their absolute values.

• Zero.

• A negative number with the sum of their absolute values.

• A positive number.

How do you approach adding two integers with the same negative sign?

• Divide one by the other.

• Multiply their absolute values.

• Subtract their absolute values.

• Add their absolute values and keep the negative sign.

What is the result of adding -8 and -10?

• -18

• -2

• 18

• 2

When adding -8 and -10 using mental math, you should think of it as:

• Subtracting 10 from -8.

• Adding 10 to -8.

• Decreasing -8 by 10.

• Increasing -8 by 10.