Common Core math · 2nd grade
Add and subtract within 1,000, including regrouping.
2.NBT.B.7 is part of the Common Core State Standards for Mathematics. Big Number Climb practices it. Standards vary by state, so check with your kid’s teacher for the exact match.
Big Number Climb: Every solved problem fuels a rocket on the launch pad. Kids add and subtract three-digit numbers in hundreds, tens and ones columns, typing the answer ones first and marking carries and borrows. The last level asks whether a finished answer is right.