Khan Academy
Khan Academy: Practice: Add Within 100 Using a Number Line
Practice adding and subtracting numbers like 54 and 37 using a number line. Numbers used in these problems are all less than 100. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or...
CK-12 Foundation
Ck 12: Elem Math: Adding Three 2 Digit Numbers
[Free Registration/Login may be required to access all resource tools.] The video shows how to add three, two-digit numbers. The video is followed by practice problems covering the topics in the video.
Khan Academy
Khan Academy: Add 2 Digit Numbers by Making Tens 2
Practice adding two-digit numbers by making tens on Khan Academy. If you are stuck, watch a refresher video or choose to get a hint. Test yourself to see how many you can get correct!
Khan Academy
Khan Academy: Select Strategies for Adding Within 100
Practice telling which strategies work for adding two numbers within 100. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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.
ICT Games
Ict Games: 100 Hunt: +10
You will need to add 10 to the target number given. Find the sum and click on it in the hundreds chart. See if you can keep your time score as low as possible.
Khan Academy
Khan Academy: Add and Subtract on the Number Line Word Problems
Practice adding and subtracting using the number line. Numbers used are 100 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
ICT Games
Ict Games: 100 Hunt Plus 9
You will need to add 9 to the target number given. Find the sum and click it in the hundreds chart. See if you can keep your time score as low as possible.
Teaching Treasures Publications
Teaching Treasures: Year Four Math (Page 1)
This interactive worksheet combines all four operations. The focus is on addition and subtraction fact through one hundred and basic multiplication and division facts. This easy to navigate activity offers learners immediate feedback and...
PBS
Pbs Learning Media: Pbs Idea Channel Collection
Explore the crossroads of art, science, and pop culture with PBS Idea Channel. Hosted by Mike Rugnetta, the Idea Channel launched in 2012 and has since posted over 100 videos, with more added every Wednesday. The program has quickly...
ClassFlow
Class Flow: Addition Subtraction
[Free Registration/Login Required] The pages of this flipchart demonstrate methods for adding and subtracting near multiples of ten and give the children opportunities to practice these methods. You may consider using a 100 square for...
Council for Economic Education
Econ Ed Link: Le Bron James, the Cavaliers, and Derived Demand
PBS video author Paul Solman reports that LeBron James has added $200 million in value to the city of Cleveland since 2003. His presence brings in $100 million each year to the workers and local businesses surrounding the NBA team. The...
ClassFlow
Class Flow: Mental Addition and Subtraction
[Free Registration/Login Required] The pages of this flipchart demonstrate methods for adding and subtracting near multiples of ten, and give the children opportunities to practice these methods. You may consider using a 100 square for...