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

1.ATO.1

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

Solve real-world/story problems using addition (as a joining action and as a part-part-whole action) and subtraction (as a separation action, finding parts of the whole, and as a comparison) through 20 with unknowns in all positions.

Example Problems
Solve the equation:
33=x+8
Solve the equation:
x+7=26
Solve the equation:
38=x+5
Khan Academy Resources
Add and subtract within 20 word problemsAdding up to four 2-digit numbersAddition and subtraction word problems: superheroesAddition and subtraction word problems: gorillas
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