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## Sums of opposite numbers and distance from zero

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Add and Subtract Integers

by CK-12 //at grade
Learn to add and subtract integers.
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7
• PLIX

## Adding Between 10 and -10

by CK-12 //at grade
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0
• Video

## Integer Application: Overdrawn Checking Account

by CK-12 //at grade
Provides an example of using an integer to represent an overdrawn checking account balance.
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3
• 1