# Arithmetic with integers (Day 1) Add, subtract, multiply - PowerPoint PPT Presentation

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## Arithmetic with integers (Day 1) Add, subtract, multiply

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### Arithmetic with integers (Day 1) Add, subtract, multiply, and divide Why do I need this? Integers are used in money, sports, Jeopardy, battle strategies, and give and ... – PowerPoint PPT presentation

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Title: Arithmetic with integers (Day 1) Add, subtract, multiply

1
Arithmetic with integers (Day 1)
• Add, subtract, multiply, and divide

2
Why do I need this?
• Integers are used in money, sports, Jeopardy,
battle strategies, and give and take.
• California State standard
• AF 1.3 Simplify expressions
• High school exit exam (CAHSEE)

3
• Silently, on your paper name 4 opposites

What is the math opposites?
What would be the opposite of 3? Think dont speak
-3 When you add opposites you will always get 0.
4
• When you are adding and/or subtracting integers
pretend that you have heroes and villains.

Integer all whole numbers and their
opposites Ex , -3. -2.00, -1, 0, 1, 4/2, 3,
Non examples 3.4, 3.987, ½, ¼, etc
5
Examples
4 -3 is the same as 4 heroes and 3 villains
after they fight what happens (whenever a villain
and a hero fight each other they both are
eliminated)
• In Heroes and Villains explain what these look
like
• -4 5
• 3 2
• -4 -5
• 4 5
• -5 2

Turn to your neighbor and see if you have the
same explanations.
6
• 4 -3 is the same as 4 heroes and 3 villains
after they fight what happens (whenever a villain
and a hero fight each other they both are
eliminated)

The Heroes win, there will be one Hero left. 4
-3 1
• Do the next problems on your own
• -4 5
• 3 2
• -4 -5
• 7 9
• -3 2

Look at your neighbors paper and compare your
7
White boards
8