Georgia 4.NR.2.1
The Standard
Fluently add and subtract multi-digit numbers to solve practical, mathematical problems using place value understanding, properties of operations, and relationships between operations.
Georgia's K-12 Mathematics Standards · Using part-whole strategies, solve problems involving addition and subtraction through the hundred-thousands place, as well as multiplication and division of multi-digit whole numbers presented in real-life, mathematical situations.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students combine and separate whole-number quantities with several digits. They use place-value reasoning to regroup, choose an efficient written method, and connect addition with subtraction in word problems.
What Mastery Looks Like
- Students align place values, regroup correctly, and calculate accurately without manipulatives. They choose the correct operation for a problem and use estimation or the inverse operation to check their answer.
Common Misconceptions
- Students may align numbers by their left edges instead of matching place values. They may regroup incorrectly across zeros or assume subtraction can be done in either order. Some choose an operation from a keyword without considering the situation.
How to Assess It
- Use this exit ticket: “A library had 8,425 books and removed 2,768. How many remain? Solve, then check your answer using addition.”
Lesson moves
Ways to Teach It
Use place-value disks to model 3,482 + 2,759 and 6,241 − 2,786, recording each regrouping beside the model.
Ask, “Why can subtraction be checked with addition?” Students write an explanation using one solved example.
Students draw digit cards to build two four-digit numbers, roll for addition or subtraction, then earn a point for an accurate result.
Give pairs a $10,000 classroom budget and a supply catalog, then have them total purchases and calculate the money remaining.
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Printable 4.NR.2.1 Worksheet
A ready-to-print activity worksheet aligned to 4.NR.2.1, with an answer key for the teacher on its own page. No account needed.
PDF, US Letter, prints cleanly in black and white.
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Related Standards
- 2.NR.2.4
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
- K.NR.5.4
Fluently add and subtract within 5 using a variety of strategies to solve practical, mathematical problems.
- 5.NR.2.1
Fluently multiply multi-digit (up to 3- digit by 2-digit) whole numbers to solve authentic problems.
- 3.PAR.2.1
Fluently add and subtract within 1000 to solve problems.
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