Module 1
Sums and Differences to 100
Standards
2.OA.A.1: Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.
2.OA.B.2: Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
2.NBT.B.5: Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
The following resources are meant to be used in conjunction with our core curriculum. They are NOT meant to replace it. These materials are to give students additional practice on the mathematical concepts covered in this Module.
Anchor Charts
Strategies
2OA1.pdf2OA2.pdf2NBT5.pdf