Second Grade Common Core Math 2 NBT.6 Add Four Two-Digit Numbers 2.NBT.6 Practice provides two ways for students to practice adding up to four two-digit numbers.
It includes 50 distinct problems in two sets (159 slides in all!), with and without following answer slides. The PowerPoint file can be used on computers, or Promethean Activboard and Smart boards.
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Standard 2.NBT.6 Use place value understanding and properties of operations to add and subtract.
6. Add up to four two-digit numbers using strategies based on place value and properties of operations.