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Grade 3 Math · World 2: Add-and-Subtract Express · Level 21
Castle 2
Mixed adding, subtracting, and story problems.
10 questions from this world. Get 8 right to win the castle!
What children learn in Level 21
Georgia's K-12 Mathematics Standards:
- 3.PAR.2.1 — Fluently add and subtract within 1000 to solve problems.
- 3.PAR.2.2 — Apply part-whole strategies, properties of operations and place value understanding, to solve problems involving addition and subtraction within 10,000. Represent these problems using equations with a letter standing for the unknown quantity. Justify solutions.