< Wikijunior:Introduction to Mathematics

Lesson

Adding and Subtracting


~ a positive number

~ a negative number

Adding Rules
Subtracting Rules
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Adding a negative number is the same as subtracting a positive number.

Subtracting a negative number is the same as adding a positive number.

Multiplying and Dividing

Multiplying a negative number by a positive number, or a positive number by a negative number makes the answer negative.

Multiplying a negative number by a negative number makes the answer positive.

Do the same for dividing.

Example Questions

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