Curated OER
Addition to One Thousand
In this addition to one thousand instructional activity, 5th graders solve 600 addition problems of 3 digit numbers, there are 30 problems on 20 pages, answers are included.
Curated OER
Standard written method for addition of two 3-digit numbers (1)
For this addition worksheet, students learn how to add two 3-digit numbers. They then solve the 12 addition problems on the worksheet. The answers are on the last page.