Question

use the number line to find the following​

Answer 1

Method 1 of 6:

Setting Up a Number Line

1

Draw a long line on a piece of paper. This will be the base of your number line.

You can draw this in pen or marker, if you want to use your number line over and over again.

2

Make hash marks on your line. This will make it look like a train track.

You can also make these in pen so you can use the number line for more than one problem.

3

On the left, start writing numbers above the hashmarks. Start with zero above the first hashmark on the left.[2]

At each hashmark, write the next number up. For example, above the hash mark next to zero, write 1.

You can write these in pen as well, so you can re-use the number line over and over again.

4

Stop numbering at 20. Remember, doing math problems with numbers over 20 will make this method too hard.

Now your number line should read from 0 to 20, going from left to right.

Method 2 of 6:

Adding Using a Number Line

1

Look at your math problem. Determine which number is first in the problem and which is second.[3]

For example, in 5 + 3, the first number is 5 and the second number is 3.

2

Find the first number of your addition problem on your number line. Put your finger there.

This is where you will start counting.

For example if your math problem is 5 + 3, you should put your finger on 5 on your number line.

3

Move your finger to the right to the next hashmark and number. You have now moved 1 space.

If you start at 5, when you reach 6, you have moved 1 space.

4

Move your finger the same number of spaces as the second number in your addition problem, then stop. This will make sure you end on the answer to your problem.

Don't move more spaces than the second number in your addition problem.

For example, if the second number in your problem is 3, you will move 3 spaces.

5

Look to see what number your finger is on now. That is the answer to your math problem.[4]

For example, if your math problem was 5 + 3, you would have moved 3 spaces to the right of 5. Your finger would be on 8 on your number line. 5 + 3 = 8.

6

Try the method again to check your answer. This will help you make sure you have the right answer to your math problem.

Answer 2

Answer:

Here is your answer

1. -2

2.+1

3.-7

4.+8