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Integer Rules Review

Adding, Subtracting, Multiplying, and Dividing Integers. Vocabulary. Integer- whole numbers and their opposites. Absolute value- A number’s distance from zero on a number line. Additive Inverse- The opposite of any number, x, is –x, and their sum is zero.

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Integer Rules Review






Presentation on theme: "Integer Rules Review"— Presentation transcript:

Slide1

Integer Rules Review

Adding, Subtracting, Multiplying, and Dividing IntegersSlide2

Vocabulary

Integer- whole numbers and their opposites

Absolute value- A number’s distance from zero on a number line

Additive Inverse- The opposite of any number, x, is –x, and their sum is zeroSlide3

Adding Integers

Rule:

Same sign- add and keep that sign

-7 + -2 = -9

Different signs- subtract and take the sign of the number with the greater absolute value

-8 + 3 = -5 7 + -4 = 3Slide4

Subtracting Integers

SAME-CHANGE-OPPOSITE

Rule- Keep the first integer the same, change the subtraction to addition, change the second integer to its opposite.

*Then use the addition rules!!Slide5

You try:

-9 – 4 =

3 – (-2) =

-5 - -(5) = Slide6

Multiplying and Dividing Integers

The rules are the same for both:

Same sign : positive answer

Different signs: negative answer

If more than two integers only apply rule to two integers at a time.Slide7

You try:

-7 x -8 =

-21 ÷ 7 =

9 x -4 =

32 ÷ -8 =