Adding & Subtracting to 100!
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Adding & Subtracting to 100!
Grade 2 Mathematics Let's Solve Problems Together!
Our Learning Goals Today
Solve addition and subtraction problems up to 100 Use blocks, drawings, and mental math Explain our thinking clearly Have fun with real-world problems!
Mental Math Warm-Up
Let's solve these quickly! 23 + 7 = ? 56 - 9 = ? 34 + 16 = ? Share your thinking strategies!
Story Problem Time!
There are 38 apples in the basket The farmer picks 25 more apples How many apples are there now? Let's solve this together!
Different Ways to Solve
{"left":"Using Base-10 Blocks\nDrawing tens and ones\nMental math strategies","right":"Number line jumping\nBreaking numbers apart\nMaking friendly numbers"}
Partner Problem Solving
Work with your partner Use blocks or drawings Solve 3 story problems Explain your thinking Take turns being the teacher!
Let's Share Our Strategies!
Who wants to wear the problem-solving hat? Show us how you solved your problem What strategy did you use? Did anyone solve it differently?
You're Amazing Math Problem Solvers!
You used blocks, drawings, and mental math You explained your thinking clearly You helped your partners learn Keep practicing these strategies! Math is everywhere around us!