In this video, we are going to go over how
to use a number line to help us solve subtraction
problems with single digit numbers
Here we have our first problem displayed,
6-2= what number?
On our number line, we begin at the first
number in our problem.
In this problem, that is 6.
Now, you look at the second number in the
problem.
In this problem, that is 2.
Now you want to fall down 2 places on your
number line because we are subtracting 2.
This shows us falling 1.
This shows us falling 2.
After falling 2 times, we landed on 4.
This means that 6-2=4.
Now I'm going to give you a couple sample
problems to try on your own.
Pause the video on the problems so you have
time to work through them.
The answer will be given at the end so you
can check your work.
The first sample problem is 9-3= what number?
Pause the video here to solve the problem.
The second sample problem is 7-1= What number?
Pause the video here to solve the problem.
Now that you have done the sample problems,
here are the answers.
For sample problem 1, you should have 9-3=6.
For sample problem 2, you should have 7-1=6.
