LEARN NC

K–12 teaching and learning · from the UNC School of Education

Goal 1

Number and Operations - The learner will read, write, model, and compute with whole numbers through 999.

Objective 1.04

Develop fluency with multi-digit addition and subtraction through 999 using multiple strategies.

  • Strategies for adding and subtracting numbers.
  • Estimation of sums and differences in appropriate situations.
  • Relationships between operations.

Resources aligned to this objective

Resources on the web

Fact Family Fun
The relation of addition to subtraction is explored with fish-shaped crackers. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Exploring Pennies and Dimes
Students examine pennies and dimes and model subtraction as they listen to a children's book. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Exploring Other Number Patterns
Students make and extend patterns with numbers in a variety of mathematical contexts. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Exploring Adding with Sets
Reading The Hershey's Kisses Addition Book will set the stage for this lesson in which students write story problems, find sums using sets, and present results in the form of a table. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Counting to Find Sums
Students model the numbers with counters as the book is read. Then they count the spots on each side of a domino and write in vertical and horizontal format the sums suggested by dominoes. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Counting Back and Counting On
Students make a train of connecting cubes and write in vertical and horizontal format the differences suggested by adding to and subtracting from the train one cube at a time. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Counting Back and Counting On
Students model numbers as a counting book is read. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Counting Back
Students count to compare plates of fish-shaped crackers then record the comparison in vertical and horizontal format. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Comparing Sets
Students write subtraction problems and model them with cubes. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Comparing Connecting Cubes: Looking Back and Moving Forward
Students use the mathematical knowledge and skills developed in the previous lessons to demonstrate understanding and the ability to apply that knowledge to playing subtraction games. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Combining Foods
Students explore addition and comparison subtraction by modeling and recording related addition and subtraction facts for a given number. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Changes in change
Students visit a website that gives them practice in counting money. (Learn more)
Format: lesson plan (grade 2–4 Mathematics)
Provided by: National Council on Economic Education
Building Sets of Ten
Students explore sets of up to 10 items and practice writing the numbers 0 through 10. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Building Sets of 19 and 20
Students count up to 20, construct and decompose sets up to 20, and record the decompositions. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Building Sets of 17 and 18
Students construct sets up to 18, write the numerals 17 and 18, and model 17 and 18 with bean sticks, cubes, and ten frames. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Building Sets of 15 and 16
Students explore the numbers 15 and 16. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Building Sets of 13 and 14
Students construct and identify sets of 13 and size 14. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Building Sets of 11 and 12
Students use bean sticks, connecting cubes, and ten frames to construct sets of 11 and 12, and then record and compare them. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Begin with Buttons: Looking Back and Moving Forward
Students review the work of the previous lessons through a variety of activity stations, one of which involves using an interactive website. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics
Balancing Equations
This lesson encourages students to explore another meaning for operations of subtraction, the balance. (Learn more)
Format: lesson plan (grade K–2 Mathematics)
Provided by: National Council of Teachers of Mathematics