Lesson: Related Subtraction Equations Mathematics • 1st Grade
In this lesson, we will learn how to write a family of subtraction facts linking three numbers up to 10 and model them with part–whole models.
Sample Question Videos
There are 5 carrots. A rabbit eats 3 of them. Which of the following gives the number of carrots left?
Which of the following is another subtraction equation for the number of carrots left?
There were 5 balloons. 3 of them popped.
Write a subtraction equation for the number of balloons left.
Which of the following is also a subtraction equation for the number of balloons left?
Here is a part-whole model.
Pick a subtraction sentence matching the part-whole model.
Pick another subtraction sentences that matches the model.