Math Chapter 1 Overview
Addition & Subtraction Within 1,000
Chapter Vocabulary:
Associative Property of Addition
Commutative Property of Addition
compatible numbers
estimate
Identity Property of Addition
pattern
Round
Lesson 1.1 - Number Patterns
Identify and describe whole number patterns and solve problems.
Lesson 1.2 - Round to the Nearest 10 or 100
Round 2- and 3-digit numbers t the nearest 10 or 100.
Lesson 1.3 - Estimate Sums
Use compatible numbers and rounding to estimate sums.
Lesson 1.4 - Mental Math Strategies for Addition
Use different strategies to find sums mentally.
Lesson 1.5 - Use Properties to Add
Use the Commutative and Associative Properties of Addition to add more than two addends.
Lesson 1.6 - Break Apart Strategy to Add
Use the break apart strategy to add 3-digit numbers.
Lesson 1.7 - Use Place Value to Add
Use place value to add 3-digit numbers
Lesson 1.8 - Estimate Difference
Use compatible numbers and rounding to estimate differences.
Lesson 1.9 - Mental Math Strategies for Subtraction
Use different strategies to find differences mentally.
Lesson 1.10 - Use Place Value to Subtract
Use place value to subtract 3-digit numbers.
Lesson 1.11 - Combine Place Values to Subtract
Use the combine place values strategy to subtract 3-digit numbers.
Lesson 1.12 - Problem Solving
Solve addition and subtraction problems by drawing a diagram.
