Curated OER
Addition Practice- Fill In the Missing Number- Three Digit Addition
In this fill in the missing number addition worksheet, 3rd graders find the value of the missing number in 18 addition problems. They are given the sum and find a missing digit in one of the three digit addends.
Curated OER
Three Digit Addition
In this addition worksheet, students record the sums to 25 three digit addition problems. They add 2 three digit numbers together in each problem.
Curated OER
Addition Word Problems
In this problem solving instructional activity, 3rd graders find the sums of three digit numbers in 2 problems about Lego blocks. They show their work and answer in a work space next to the problem.