2.NBT.5

2.NBT.5 – Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

Internet Resources (Videos, Websites, etc.)

K-5 Math Teaching Resources

  1. 2 Digit Addition Split
  2. Four in a Row with Near Doubles (Version 2)
  3. Four in a Row with Near Doubles (Version 3)
  4. Close to 100
  5. Keep on Doubling
  6. Number Wheel Spin

Khan Academy

  1. 2 and 3-digit subtraction
  2. 2-digit addition

Learn Zillion Instructional Videos

NCTM Illuminations

  1. Addend Pairs to 12
  2. Balancing Discoveries
  3. Comparing Sets
  4. Counting to Find Sums
  5. Do It With Dominoes
  6. Electronic Abacus
  7. Exploring Adding with Sets
  8. Finding Addition Patterns
  9. Finding Sums to Six
  10. Hopping Backward to Solve Problems
  11. How Many Under the Shell?
  12. Mathematics and Football: Unit Overview
  13. Seeing Doubles
  14. Some Special Sums
  15. Ten Frame
  16. Using the Number Line to Compare
  17. What’s Left?

Online Practice from IXL

  1. Addition – two digits: Add a two-digit and a one-digit number – without regrouping
  2. Addition – two digits: Add a two-digit and a one-digit number – with regrouping
  3. Addition – two digits: Add two two-digit numbers – without regrouping
  4. Addition – two digits: Add two two-digit numbers – with regrouping
  5. Addition – two digits: Addition input/output tables – up to two digits
  6. Addition – two digits: Ways to make a number using addition
  7. Addition – two digits: Balance addition equations – up to two digits
  8. Subtraction – two digits: Subtract a one-digit number from a two-digit number – without regrouping
  9. Subtraction – two digits: Subtract a one-digit number from a two-digit number – with regrouping
  10. Subtraction – two digits: Subtract two two-digit numbers – without regrouping
  11. Subtraction – two digits: Subtract two two-digit numbers – with regrouping
  12. Subtraction – two digits: Subtraction input/output tables – up to two digits
  13. Subtraction – two digits: Ways to make a number using subtraction
  14. Subtraction – two digits: Balance subtraction equations – up to two digits
  15. Mixed operations: Add and subtract numbers up to 100
  16. Mixed operations: Addition and subtraction – ways to make a number – up to 100
  17. Mixed operations: Addition and subtraction – balance equations – up to 100
  18. Mixed operations: Which sign (+ or -) makes the number sentence true?

One comment

  1. Lisa says:

    Wow! This is a great site with many activities to help with planning our CCES lessons. Thank you so much for sharing. I was becoming frustrated since this is our first year.

Leave a Reply

Your email address will not be published. Required fields are marked *

Anti-Spam Quiz: