7th Grade Math - Understand Distances Between Numbers on a Number Line: CCSS.Math.Content.7.NS.A.1b

1

Use the number line provided to help solve the following problem:

Negative number line

Explanation

In order to solve this problem, we need to start at on the number line.

Next, we have which means we need to move places to the left on the number line. When we have an addition sign we move to the right because that is towards the positive side of the number line. When we have a subtraction sign we move to the left because that is towards the negative side of the number line.

4 10

The orange arrow moved places to the left, and ended at ; thus,

2

Use the number line provided to help solve the following problem:

Negative number line

Explanation

In order to solve this problem, we need to start at on the number line.

Next, we have which means we need to move places to the right on the number line. When we have an addition sign we move to the right because that is towards the positive side of the number line. When we have a subtraction sign we move to the left because that is towards the negative side of the number line.

5 5

The orange arrow moved places to the right, and ended at ; thus,

Remember, and are opposite numbers. A number and its opposite always have a sum of .

3

Use the number line provided to help solve the following problem:

Negative number line

Explanation

In order to solve this problem, we need to start at on the number line.

Next, we have which means we need to move places to the right on the number line. When we have an addition sign we move to the right because that is towards the positive side of the number line. When we have a subtraction sign we move to the left because that is towards the negative side of the number line.

15 7

The orange arrow moved places to the right, and ended at ; thus,

4

Use the number line provided to help solve the following problem:

Negative number line

Explanation

In order to solve this problem, we need to start at on the number line.

Next, we have which means we need to move places to the right on the number line. When we have an addition sign we move to the right because that is towards the positive side of the number line. When we have a subtraction sign we move to the left because that is towards the negative side of the number line.

The orange arrow moved places to the right, and ended at ; thus,

5

Use the number line provided to help solve the following problem:

Negative number line

Explanation

In order to solve this problem, we need to start at on the number line.

Next, we have which means we need to move places to the right on the number line. When we have an addition sign we move to the right because that is towards the positive side of the number line. When we have a subtraction sign we move to the left because that is towards the negative side of the number line.

8 15

The orange arrow moved places to the right, and ended at ; thus,

6

Use the number line provided to help solve the following problem:

Negative number line

Explanation

In order to solve this problem, we need to start at on the number line.

Next, we have which means we need to move places to the left on the number line. When we have an addition sign we move to the right because that is towards the positive side of the number line. When we have a subtraction sign we move to the left because that is towards the negative side of the number line.

3 4

The orange arrow moved places to the left, and ended at ; thus,

7

Explanation

Since is greater than and is positive, our answer is positive. We treat as a normal subtraction.

is the answer.

8

Use the number line provided to help solve the following problem:

Negative number line

Explanation

In order to solve this problem, we need to start at on the number line.

Next, we have which means we need to move places to the left on the number line. When we have an addition sign we move to the right because that is towards the positive side of the number line. When we have a subtraction sign we move to the left because that is towards the negative side of the number line.

9 12

The orange arrow moved places to the left, and ended at ; thus,

9

Use the number line provided to help solve the following problem:

Negative number line

Explanation

In order to solve this problem, we need to start at on the number line.

Next, we have which means we need to move places to the right on the number line. When we have an addition sign we move to the right because that is towards the positive side of the number line. When we have a subtraction sign we move to the left because that is towards the negative side of the number line.

10 9

The orange arrow moved places to the right, and ended at ; thus,

10

Use the number line provided to help solve the following problem:

Negative number line

Explanation

In order to solve this problem, we need to start at on the number line.

Next, we have which means we need to move places to the left on the number line. When we have an addition sign we move to the right because that is towards the positive side of the number line. When we have a subtraction sign we move to the left because that is towards the negative side of the number line.