Learning Goal
Part of: Represent and solve problems involving addition and subtraction — 1 of 1 cluster items
Use addition and subtraction within 100 to solve one- and two-step word problems
**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.
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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.
What you'll learn
- Identify the problem situation type (adding to, taking from, putting together, taking apart, or comparing) in a one-step word problem
- Solve one-step addition and subtraction word problems within 100 with the unknown in the result position
- Solve one-step word problems within 100 with the unknown in the change or start position, writing an equation with a symbol (such as a box or question mark) for the unknown
- Represent any word problem with a labeled drawing (such as a tape diagram or number bond) and a matching equation
- Solve comparison word problems involving "more than" and "fewer than" within 100
- Solve two-step word problems within 100, writing a separate equation for each step with a symbol for each unknown
Prerequisites
- 1-oa-a-1
Slides
Interactive presentations perfect for visual learners • 2 slide decks
Slide Video
Watch narrated slides play like a video lesson • Narrated slide playback