Let’s Learn!
How do we regroup for addition?
Goal:
Goal:
Think About It!
Goal: Learn more about making 10s from 1s.
James has pumpkins, bats, and spiders to hang in his house. He sees groups of 10 and 1. Click them to count the groups.
James sees 3 groups of 10 and 3 groups of 1. We can skip count the groups of 10 and add the leftover 1s! Let’s use base-ten blocks to help us skip count. We will use 3 rods for the 3 groups of 10.
Now we need to add on the 3 groups of 1. What is 30 + 3? Click Show Me to check your work!
30
31, 32, 33
30 + 3 is 33. James has 33 pumpkins, bats, and spiders. His house will look so spooky!
Which number sequence matches these base-ten blocks?
- 100, 200, 300, 400
- 5, 10, 15, 20
- 10, 20, 30, 40
Sorry, that was not right. We need 10, 20, 30, 40.
Sorry, that was not right. We need 10, 20, 30, 40.
That is right: 10, 20, 30, 40!
What is the sum of 40 + 2?
- 42
- 40
- 24
Yes! 40, 41, 42!
Sorry, that was not right. 40, 41, 42.
Sorry, that was not right. 40, 41, 42.
Summary
Questions answered correctly:
Questions answered incorrectly: