Two-Digit Addition and Subtraction

India·

Math

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At a Glance

SubjectMath

Original Prompt

By 5/5/26, given two 2-digit numbers, Ruben will write the sum or difference by using a strategy based on place value, properties of operations, or the relationship between addition and subtraction (e.g., combining tens, make a ten, think addition), for 4 out of 5 problems, on 3 out of 4 progress monitoring assessments.

This resource focuses on teaching students how to solve two-digit addition and subtraction problems using place value strategies. It emphasizes the decomposition of numbers into tens and ones to simplify the addition and subtraction processes. By using examples and step-by-step explanations, students learn to combine numbers strategically, such as 'making a ten' for easier calculations. The document includes guided practice problems for both addition and subtraction, encouraging students to apply various strategies and show their work for better understanding. It also introduces deeper thinking strategies for subtraction, enabling students to approach problems from multiple angles.