Andrea's Integer Scribe Post

We're learning about adding and subtracting
integers.

you have to learn about:

• How to add and subtract in integers
• Have and owe
• Integer tiles
• Number line
• Zero pair
• When to use brackets

I will show you some question and show you how to solve it.

Have and owe:

1. 10+(-2)=

Use the have word for positive and owe for negative.

1. 10+(-2)=8

have 10 and owe 2=have 8

Use 'and' for add sign.

Integer tiles:

1. 6+(-7)=

use integer tiles to show how to solve it easy.

1. 6+(-7)=-1

have 6 and owe 7=owe 1

[++++++]

[------]-

Number line:

1. 9+(-6)=

Another way to show how to solve it easy.

1. 9+(-6)= 3

have 9 and owe 6= have 3

<-------|-------->

   < 9

     >6

Zero pairs:

1. 3+(-3)=

zero pairs is when positive and negative have the same amount.

1. 3+(-3)= 0

have 3 and owe 3 = 0

When to use brackets:

1. -9--8=

you notice there is something wrong with this question,now it's the time to use the bracket.

so after you put the bracket the question will look like something like this.Then answer.(remember only use bracket if there's a double negative.)

1. -9[-(-8)]= -1

owe 9 remove have 8 = owe 1

---------  ++++++++

           [--------]--->

[--------]-

[++++++++  ]

you use the "remove" word instead of "and" to every question where - and a question with a bracket.

Subtracting integer:

Subtracting integer is same as adding where you use:have and owe,integer tiles, number line, zero pairs, and brackets.

1. (-5)-3=

If the question have both same type like "negative and negative" you just have to add them together to get the answer even if it's subtracting.

1. (-5)-3= -8

owe 5 and owe 3 = owe 8

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