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Word Problems within 20

Braylon Thomas-Wilson

Created on February 19, 2026

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Transcript

Elementary Education

Mr.Braylon's 1st Grade Math Presents

Additon and SUbtraction

Word Problems within 20

Guided Practice or We DO

Objectives

assessment or Exit Ticket

Independent Practice or You DO

Model or I DO

Standard

Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions.

Let's Review!

Key words

  • In all
  • Altogether
  • Total
  • Sum
  • How many more
  • How many are Left
  • Difference

Problem 1

Problem 1

Problem 3

Your TURN!

Lets WRap Up!

  • We can use addition and subtraction within 20 to solve word problems.
  • Keywords help us choose the operation.
  • Addition Keywords
    • in all
    • altogether
    • total
    • sum
  • Subtraction Keywords
    • how many are left
    • how many more
    • difference
  • We solved different problem types: Adding to, Taking from, Putting together, Taking apart, Comparing How We Solve Word Problems
    • Read the problem carefully
    • Look for keywords
    • Decide: add or subtract
    • Write an equation
    • Solve and check
  • (Quick Check) How do you know when to subtract instead of add?

Exit Ticket

Thanks for LEarning!

REMEMBER you get smarter and Smarter Everyday!