Notes for August 10

Travailpainful, arduous

work

IWBAT add integers.

Integer – any positive or negative number, excluding fractions, decimals, or percents.

But I don’t know how to add

integers!!! I think that I am

going to …

No vorries children!

Adding integers is not that

different from adding whole

numbers.

There are 3 ways that I use to add integers:

1.) Number Line

2.) Counters

3.) Song

To use the number line, follow these steps:

1.) Start at the point of the first number

2.) Then do one of two things:

a) If the second number is positive, go to the right the number of

spaces

b) If the second number is negative, go to the left the number of spaces

Simplify: -3 + 7

3 74

-5 -2-3-4 -1 0 1 2 76543 98

-3Move the point 7 spaces to the RIGHT 4

Simplify: 4 + (-5)

4 ( 5) 1

-5 -2-3-4 -1 0 1 2 76543 98

-1

Move the point 5 spaces to the LEFT

4

Simplify: -5 + 2

5 2 3

-5 -2-3-4 -1 0 1 2 76543 98

-5

Move the point 2 spaces to the RIGHT

-3

To use the counters method, follow these steps:

1.) Make a T-Chart

2.) Use “+” signs to represent the positive number and “-” to represent the negative number

3.) Cross out every “+” that you have a “-” for

4.) Count what you have left. That is your answer. If you have more “+” left, your answer is positive; if you have more “-” left, your answer is negative.

Simplify 9 + (-5)

9 ( 5)49 -5

+++

++

++

++ -

-

-

-

-

Simplify -8 + 3

8 3 5-8 3

--

--

--

-- +

+

+

Simplify -3 + 7

3 74-3 7

+

++

-

-- +

+ +

+

To add integers, simply sing this song to the tune of Row, Row, Row, Your Boat:

Simplify -32 + 41

32 419

Simplify -21 + 14

2114 7

Simplify -15 + (-20)

15 ( 20) 35

I am Hall of Fame lineman Randall

McDaniel. I wasn’t selected for 12 Pro

Bowls and the Hall of Fame just because I went to Agua Fria High School. I got

where I am now because of hard work and lots of practice. I most liked practicing using whiteboards.

It’s whiteboard practice time!