Lesson: Word Problems: Adding Numbers up to 20 Mathematics • 1st Grade
In this lesson, we will learn how to solve addition problems with numbers up to 20 by finding either the missing part or the whole and how to solve additive comparison problems.
Sample Question Videos
Jacob built a tower with 8 blocks. He then added 5 more blocks. How many blocks are in the tower now?
6 children were playing in a playground. They were joined by another group of children. After that, there were 10 children in the playground. How many children were in the group that joined?
Scarlett built a tower with 14 blocks, but 6 blocks fell off. How many blocks are still in the tower?