Curated OER
Walk and Bike Across America
Pupils learn how to use maps, compute mileage, and be physically active while exploring America's national parks, historical heritage, and nutritional information via key agricultural sites.
Curated OER
Subtraction Decimals
In this math worksheet, students subtract the decimals while taking special care to keep the decimals in the correct place value. The answers are also available.
Khan Academy
Khan Academy: Adding Two Digit Numbers (No Regrouping)
In this exercise, students practice adding two-digit numbers (no regrouping). Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
CK-12 Foundation
Ck 12: Elem Math: Adding Two Digit Numbers Without Regrouping
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a 2-digit addition problem without regrouping. The video is followed by practice problems.
Cool Math
Coolmath: Coolmath4kids: Adding Numbers Within 100 With Regrouping
Demonstrates how to regroup when adding 2-digit numbers.
Cool Math
Coolmath: Coolmath4kids: Adding Numbers Within 100
A step-by-step tutorial showing how to add 2-digit numbers in place value columns without regrouping. Includes exercises to try. CCSS.Math.Content.3.NBT.A.2 Fluently add and subtract within 1000
Cool Math
Coolmath: Coolmath4kids: Adding Numbers Within 1000
Step-by-step tutorial showing how to add 3-digit numbers in place value columns with and without regrouping. CCSS.Math.Content.3.NBT.A.2 Fluently add and subtract within 1000
E-learning for Kids
E Learning for Kids: Math: Hamburger Restaurant: Addition
On this interactive website students practice various math skills using a real life scenario at a hamburger restaurant. Those skills include adding two-digit numbers and three-digit numbers.
Primary Resources
Primary Resources: Addition and Subtraction Higher Numbers
An extensive selection of teacher resources to aide in teaching and reviewing addition and subtraction of two and three digit numbers, inverse operations, counting on, and other mental strategies for addition and subtraction. Resources...
CK-12 Foundation
Ck 12: Elem Math: Adding Decimals From the Thousandths Place to the Tens Place
[Free Registration/Login may be required to access all resource tools.] This mathematics resource is a video demonstrating addition with decimals to the thousandths place, followed by practice problems adding numbers with digits in the...
Khan Academy
Khan Academy: Regrouping When Adding One Digit Numbers
In this exercise, students practice regrouping when adding one-digit numbers. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Adding 1s or 10s (No Regrouping)
In this exercise, students practice adding 1s or 10s (no regrouping). Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Add Within 100
Practice adding two-digit numbers. All numbers in these problems are 100 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Elem Math: Adding, Subtracting, and Multiplying With Parentheses
[Free Registration/Login may be required to access all resource tools.] A learning module where students apply the order of operations to solve equations involving addition, subtraction, and multiplication of multi-digit numbers, as well...
Mr. Martini's Classroom
Mr. Martini's Classroom: Adding 4 Numbers
Students practice adding four one-digit numbers. They can select the largest addend for each problem.
Varsity Tutors
Varsity Tutors: Aplusmath: Addition Worksheets
Create customized addition worksheets. Choose from basic facts to four-digit by four-digit questions. The size of problem set can be selected, as well as whether the format will be vertical or horizontal. An answer key can also be...
CK-12 Foundation
Ck 12: Elem Math: Adding 3 Numbers Word Problems
[Free Registration/Login may be required to access all resource tools.] This mathematics resource begins with a video tutorial working through a word problem adding 3 whole numbers. It also includes adaptive practice questions for adding...
ClassFlow
Class Flow: Be a Problem Solver!
[Free Registration/Login Required] This flipcharts provides students with the opportunity to add and subtract 3 and 4 digit numbers. Students also will practice making change.
Math Slice
Math Slice: Math Jeopardy
This resource is a jeopardy game where students select questions where they have to determine the two numbers that create the given sum. The sum is a range of 2, 3, 4, and 5 digit numbers. The answers are multiple choice, and students...
Illustrative Mathematics
Illustrative Mathematics: Toll Bridge Puzzle
You are on a trip and need to cross a bridge, but you have to pay tolls in coins. Solve this puzzle by making your way to the island only using 100 coins.
Illustrative Mathematics
Illustrative Mathematics: Saving Money 2
The purpose of this task is for students to relate addition and subtraction problems to money and to situations and goals related to saving money. A problem is given that will contain multiple solutions, this allows students to think...