2.4.D
The Standard
generate and solve problem situations for a given mathematical number sentence involving addition and subtraction of whole numbers within 1,000
Texas Essential Knowledge and Skills for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students create a real or imagined story that matches a given addition or subtraction equation. They solve the equation and explain what the answer means in the story.
What Mastery Looks Like
- Students can write a clear story that matches every number and operation in a given equation. They solve accurately and label what the answer represents.
Common Misconceptions
- Students may choose an operation based on a keyword instead of the action in the story. They may reverse the numbers in subtraction or write a story that does not match the equation.
How to Assess It
- Give students 426 - 178 = __. Ask them to write a matching story, solve it, and label the answer with a unit.
Lesson moves
Ways to Teach It
Give pairs base-ten blocks and an equation card, then have them model the equation and write a matching story.
Ask students to explain how 245 + 132 could describe books, stickers, or students, then compare which details must stay the same.
Play a matching game where students pair equation cards with story cards and correct any story that does not fit.
Use classroom supply counts to create and solve stories about combining new items or finding how many remain.
Keep exploring
Related Standards
- 1.5.D
represent word problems involving addition and subtraction of whole numbers up to 20 using concrete and pictorial models and number sentences
- 3.5.A
represent one- and two-step problems involving addition and subtraction of whole numbers to 1,000 using pictorial models, number lines, and equations
- 1.3.F
generate and solve problem situations when given a number sentence involving addition or subtraction of numbers within 20
- 2.4.C
solve one-step and multi-step word problems involving addition and subtraction within 1,000 using a variety of strategies based on place value, including algori...
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