standard_description: Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
problem_activity: Stage 1: Numbers to 99 by 1
Required Preparation
Materials to Gather
Dry erase markers
Sheet protectors
Materials to Copy
Blackline Masters
Write the Number Stage 1 Gameboard

Narrative
Students count by 1 and choose whether to count forward or backward. Gameboards go from 39–60, 69–90, and 78–99.


aligns: no