May 15, 2019

Thatquiz.org-  Wednesday or Thursday Classwork 

Integer subtraction


Period 1

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Period 3

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Period 4

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Period 5

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Period 6

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5/13/2019

That Quiz- Monday's Assignment (if turned in late, you will receive -10 points off)

Period 1  2UMEVQJP

Period 2

Period 3  C91ZPR95

Period 4   JOMPXCP2

Period 5  CV14C7L6

Period 6   2I4NNBYD

5\6/2019

Integer Rules 5/9 /2019

Integer Rules

Subtraction

1. Change the subtraction problem into addition.

2. Change the second numbers' sign to the opposite.

3. Follow addition rules.

Examples

Original Problem

-9 - (-7)=

After you change the problem:

-9 + 7 = -2

Addition

1. Like signs you add and the answer will have the same sign.

2 Unlike signs you subtract and keep the sign of the largest absolute value.

Examples:

Like signs

-6 + -5 = -11

Unlike signs

-6 + 5 = -1

Multiplication and Division

1. Like signs ALWAYS have a positive answer.

Examples:

(-6)(-9)= +54

-70 ÷ (-10) = + 7

2. Unlike signs ALWAYS have a negative answer.

Examples

-42 ÷ 7 = -6

-2 x 3 = -6