ClassX Video Lessons Grade Grade 2 Addition and Subtraction | How to Add and Subtract | Khan Academy Kids
Imagine you have 10 dirty, stinky socks in your room. You decide to put 4 of them in the laundry basket. Now, you want to know how many socks are still left in your room. Let’s find out together!
One way to solve this is by using subtraction. You start with the total number of socks, which is 10, and then subtract the number of socks you put in the laundry basket, which is 4. So, you do the math like this:
10 – 4 = 6
This means there are 6 socks still in your room.
Another way to figure it out is by using addition. You know you put 4 socks in the basket, and you want to find out how many more you need to make 10. You can think of it like this:
4 + ? = 10
When you add 6 to 4, you get 10. So:
4 + 6 = 10
This also shows that there are 6 socks still in your room.
Both ways tell us the same thing: there are 6 stinky socks still left in your room. Now you know how to use both subtraction and addition to solve problems like this!
Sock Hunt: Gather a group of socks and place them around a room. Ask the children to count the total number of socks. Then, have them “put away” a few socks in a basket. Encourage them to use subtraction to figure out how many socks are left in the room. For example, if they started with 12 socks and put 5 in the basket, how many are left? Let them check their answer by counting the remaining socks.
Missing Socks Puzzle: Create a simple puzzle where children have to find out how many socks are missing to reach a certain number. For instance, if there are 3 socks in a basket and they need to have 8 in total, how many more socks do they need? Encourage them to use addition to solve this puzzle. They can use real socks or draw pictures to visualize the problem.
Story Time Math: Ask the children to create a short story about a character who has a certain number of socks and needs to figure out how many are left after doing laundry. Encourage them to use both subtraction and addition in their story to solve the problem. They can draw pictures to illustrate their story and share it with the class.
