Standard Alignments:

TEKS Math: 2.4.B

(B) Add up to four two-digit numbers and subtract two-digit numbers using mental strategies and algorithms based on knowledge of place value and properties of operations

AU Math: ACMNA030

(Y2) Solve simple addition and subtraction problems using a range of efficient mental and written strategies (ACMNA030)

CCSS Math: 2.NBT.5

2.NBT.5 Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

Related Lessons

Identify the Place and Value of Digits in a Three-Digit Number
Subtract Two-Digit Numbers (With Decomposing)
Write Numbers Using Expanded Form
Add Three-Digit Numbers (With Regrouping)
Add Two-Digit Numbers (Without Composing)
Skip-Count By 5s, 10s, and 100s
Compare Three-Digit Numbers Using Symbols
Add Up To Four Two-Digit Numbers
Count Within 1000
Subtract Three Digit Numbers with Decomposing
Subtract Two-Digit Numbers (Without Decomposing)

Related Concepts

Use Fact Families
Add Numbers by Counting Up
Solve Addition Equations
Create Story Problems (Addition & Subtraction)
Write Addition Equations
Memorize Addition Facts
Add Three Numbers
Add With Two-Digit Numbers Within 20
Add Two-Digit Numbers (With Composing)
Add in Any Order
Use Groups to Add
Solve Addition Equations
Add Three-Digit Numbers (With Regrouping)
Use Arrays (Addition)
Add Up To Four Two-Digit Numbers
Add & Subtract Time Intervals
Solve Problems Involving Time Intervals
Add Money Amounts
Add Multi-Digit Numbers (with Composing)
Solve Two-Step Word Problems with an Unknown (4 Operations)
Use Rounding to Estimate Answers
Flashcards Add One-Digit Numbers
Flashcards Add Three-Digits Without Composing
Add Multi-Digit Numbers (with Composing)
Add Fractions with Like Denominators
Solve Addition Word Problems
Memorize Addition Facts
Add Numbers (Sum of 5)
Add Numbers (Sum of 10)
Different Ways to Show Addition Poster