Grade 2 introduction print this page. Fluently add and subtract within 20 using mental strategies. In grade 2 instructional time should focus on four critical areas.
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Understand that the three digits of a three digit number represent amounts.
Common core math 2nd grade.
Ccssmathcontent2nbtb9 explain why addition and subtraction strategies work using place value and the properties of operations.
2nd grade math common core state standards worksheets operations algebraic thinking.
Ccssmathcontent2nbtb8 mentally add 10 or 100 to a given number 100 900 and mentally subtract 10 or 100 from a given number 100 900.
And 4 describing and analyzing shapes.
Number and operations in base ten.
Students extend their understanding of the base ten system.
Generate measurement data by.
Second grade math common core state standards add and subtract within 20.
Represent and interpret data.
3 using standard units of measure.
Represent and solve problems involving addition and subtraction.
2 building fluency with addition and subtraction.
1 extending understanding of base ten notation.
Find games videos and activities aligned to the common core state standards for mathematics.
Measure and estimate lengths in standard units.
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