CK-12 Foundation
Ck 12: Elem Math: Adding and Subtracting Numbers Up to 20 Word Problems
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve word problems using both addition and subtraction. The video is followed by additional practice problems.
Expansion Learning
Expansion Learning: Math Activity: Add 2, Up to 100
Activity provides students the practice they need to master the skill of adding by 2. Immediate feedback is given.
Expansion Learning
Expansion Learning: Math Activity: Add 6, Up to 100
Activity provides students the practice they need to master the skill of adding by 6. Immediate feedback is given.
Expansion Learning
Expansion Learning: Math Activity: Add 4, Up to 100
Activity provides students the practice they need to master the skill of additing by 4. Immediate feedback is given.
Expansion Learning
Expansion Learning: Math Activity: Add 1, Up to 100
Activity provides students the practice they need to master the skill of adding by 1. Immediate feedback is given.
Expansion Learning
Expansion Learning: Math Activity: Add 8, Up to 100
Activity provides students the practice they need to master the skill of adding by 8. Immediate feedback is given.
Expansion Learning
Expansion Learning: Math Activity: Add 7, Up to 100
Activity provides students the practice they need to master the skill of adding by 7. Immediate feedback is given.
Expansion Learning
Expansion Learning: Math Activity: Add 5, Up to 100
Activity provides students the practice they need to master the skill of adding by 5. Immediate feedback is given.
Expansion Learning
Expansion Learning: Math Activity: Add 3, Up to 100
Activity provides students the practice they need to master the skill of adding by 3. Immediate feedback is given.
Expansion Learning
Expansion Learning: Math Activity: Add 10, Up to 100
Activity provides students the practice they need to master the skill of adding by 10. Immediate feedback is given.
Expansion Learning
Expansion Learning: Math Activity: Add 9, Up to 100
Activity provides students the practice they need to master the skill of adding by 9. Immediate feedback is given.
Khan Academy
Khan Academy: Add Using Groups of 10 and 100
Practice making groups of 10 and 100 while adding 3-digit numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Add and Subtract Within 100 Word Problems 3
Practice solving word problems with addition and subtraction. These questions are start unknown problems including add to and take from problems. Numbers used are 100 or less.
Khan Academy
Khan Academy: Subtraction Within 100
In this exercise, students practice subtraction within 100. Students receive immediate feedback and have the opportunity to watch a video tutorial, get hints, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2 Fluently add and...
Khan Academy
Khan Academy: Add and Subtract Within 100 Word Problems 1
Practice adding and subtracting to solve word problems. These questions are result unknown or change unknown problems. Numbers used are 100 or less.
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!
Digital Dialects
Digital Dialects: Numbers in Italian 10 100
Play this game to match two written Italian number words to their sum in Italian. The numbers are multiples of ten, up to one hundred.
Khan Academy
Khan Academy: Adding Fractions With 10 and 100 as Denominators
In this exercise, students practice adding fractions with 10 and 100 as denominators. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
ICT Games
Ict Games: 100 Hunt: +11
You will need to add 11 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.
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.
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.
ClassFlow
Class Flow: To Regroup or Not to Regroup, That Is the Question
[Free Registration/Login Required] Given base ten blocks and 5 addition problems, the students will demonstrate understanding of the base ten system by choosing to regroup when needed 100 % of the time, with or without visual...
University of Cambridge
University of Cambridge: Nrich: Make 100
On this one page website sharpen your logic and problem solving skills while working on this challenge. The solution is available to double check your solution.
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.