Adding Integers By: Jasmaine Aiken. The rules for adding integers Step 1- When adding integers with the same sign you add. Step 2- Keep the sign.

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Presentation transcript:

Adding Integers By: Jasmaine Aiken

The rules for adding integers Step 1- When adding integers with the same sign you add. Step 2- Keep the sign.

The rules for subtracting integers Step 1- when subtracting integers with different signs you subtract. Step 2- take the sign of the bigger number

Integer word problem In Buffalo, New York, the temperature was - 14°F in the morning. If the temperature dropped 7°F, what is the temperature now?

ANSWER- 21

Word problem In the Sahara Desert one day it was 136°F. In the Gobi Desert a temperature of -50°F was recorded. What is the difference between these two temperatures?

Answer- 186

The number line for adding integers The number line is a line labeled with the integers in increasing order from left to right, that extends in both directions: For any two different places on the number line, the integer on the right is greater than the integer on the left. Examples: 9 > 4, 6 > -9, -2 > -8, and 0 > -5

In the following examples, we convert the subtracted integer to its opposite, and add the two integers = 7 + (-4) = (-5) = 12 + (5) = = -8 + (-7) = (-40) = (40) = 18

Examples of adding Integers = 7 (-7) + (-2) = -(7 + 2) = -9 (-80) + (-34) = -( ) = -114