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Standards/Math/South Carolina/1.ATO.8

1.ATO.8

1.ATO Algebraic Thinking and Operations
1.ATO.1
1.ATO.2
1.ATO.3
1.ATO.4
1.ATO.5
1.ATO.6
1.ATO.6a
1.ATO.6b
1.ATO.7
1.ATO.8
1.ATO.9
1.ATO.9a
1.ATO.9b

Determine the missing number in addition and subtraction equations within 20.

Example Problems
Solve the equation:
x−7=13
Solve the equation:
42=x−9
Solve the equation:
30=x−4
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