 # Preparation for Geometry’s Journey Tuesday, August 19.

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Preparation for Geometry’s Journey Tuesday, August 19

Adding and Subtracting Integers If the numbers have the same signs, –keep the signs and add the numbers If the numbers have different signs, –subtract the numbers and keep the sign from the largest number. 7 + 2-7 + -2-7 – 2 7 – 27 + -2-7 + 22 – 7

-9 + -6 A.-15 B. 15 C. -3 D. 3

-8 + 2 A.-10 B. 10 C. -6 D. 6

-1 + 3 A.-4 B. 4 C.-2 D. 2

4 + -10 A.-14 B. 14 C. -6 D. 6

14 + -9 A.-23 B. 23 C. -5 D. 5

Remember subtracting a negative is the same as adding a positive

-9 – -6 A.-15 B. 15 C. -3 D. 3

-8 – 2 A.-10 B. 10 C. -6 D. 6

-1 – 3 A.-4 B. 4 C.-2 D. 2

4 – -10 A.-14 B. 14 C. -6 D. 6

4 – 10 A.-14 B. 14 C. -6 D. 6

-3 – -3 A. 0 B. 9 C. -6 D. 6

When adding or subtracting more than two numbers… ALWAYS GO LEFT TO RIGHT 7 + 2 + -13

Subtract signs are attached to their number like negatives. 7 – 2 + 12 + -3

4 – 10 + 8 A.-14 B. 14 C. 2 D. 2

Adding Integers Practice Attach worksheet into your notebook. If it has more than 2 numbers, show what your first step is.

Multiplying & Dividing Integers If the signs are the same, –then the answer is positive. If the signs are different, –then the answer is negative. 7 x -2-7(2)-6 ÷ 26/-2 7 x 2(-7)(-2)-6/-26÷2

Multiplying Integers Practice Attach worksheet into your notebook.

Probability Basics Top Number – number of the specific thing Bottom Number – total number of items

8 red dots, 11 green dots Probability of getting green As a fraction As a decimal As a percent

8 red dots, 11 green dots Probability of getting red As a fraction As a decimal As a percent

Probability Practice Attach worksheet into your notebook.