Try It Out!
Do you feel comfortable subtracting from 20 or less?
Goal:
Goal:
You Try!
Goal: Fluently subtract from 20 or less.
Now that we can create subtraction pictures and use them to find the difference, let’s practice writing subtraction sentences that match the pictures we see. This will help us remember whole - part = part and how to find the difference!
The aliens are taking moon rocks home with them to remember their fun day together! How many rocks are left on the moon? Can you write a subtraction sentence that matches the picture? Remember to find the whole, the part that is being taken away, and the difference! Click Check to check your answer.
Yes! That was the correct subtraction sentence.
Sorry, that was the incorrect subtraction sentence. What is the whole? How many are being taken away? How many are left over?
Yes! That was the correct subtraction sentence.
Sorry, that was the incorrect subtraction sentence. What is the whole? How many are being taken away? How many are left over?
Yes! That was the correct subtraction sentence.
Sorry, that was the incorrect subtraction sentence. What is the whole? How many are being taken away? How many are left over?
Yes! That was the correct subtraction sentence.
Sorry, that was the incorrect subtraction sentence. What is the whole? How many are being taken away? How many are left over?
Yes! That was the correct subtraction sentence.
Sorry, that was the incorrect subtraction sentence. What is the whole? How many are being taken away? How many are left over?
Yes! That was the correct subtraction sentence.
Sorry, that was the incorrect subtraction sentence. What is the whole? How many are being taken away? How many are left over?
Yes! That was the correct subtraction sentence.
Sorry, that was the incorrect subtraction sentence. What is the whole? How many are being taken away? How many are left over?
Yes! That was the correct subtraction sentence.
Sorry, that was the incorrect subtraction sentence. What is the whole? How many are being taken away? How many are left over?
Yes! That was the correct subtraction sentence.
Sorry, that was the incorrect subtraction sentence. What is the whole? How many are being taken away? How many are left over?
Yes! That was the correct subtraction sentence.
Sorry, that was the incorrect subtraction sentence. What is the whole? How many are being taken away? How many are left over?
Question:
What do you notice about
20 - 10 = 10?