Tuesday

September 2, 2014

September 2, 2014

Posted by **Judy** on Tuesday, November 16, 2010 at 2:03pm.

12 - 15 - 10 - 8 = ?

3 - 7 - 4 - 2 = ?

11 - 9 - 6 - 6 = ?

6 - 5 - 4 - 2 = ?

8 - 5 - 5 - 5 = ?

12 - 7 - 5 - 4 = ?

13 - 3 - 6 - 1 = ?

16 - 10 - 2 - 3 = ?

8 - 2 - 2 - 2 = ?

I am not understanding how to help figure these problems out? I would greatly appreciate the help so I can teach my son how to get these answers.

- 4th grade algebra -
**Ms. Sue**, Tuesday, November 16, 2010 at 2:25pmYou're adding negative numbers. As you've typed the above, all of the first numbers are positive.

7 - 7 - 7 - 7 = -21

12 - 15 - 10 - 8 = -21

Can you do the rest?

This number line may help you.

http://www.mathsisfun.com/number-line.html

- 4th grade algebra -
**Henry**, Friday, November 19, 2010 at 7:05pm1. 7 -7 - 7 -7,

First, Add all numbers with like signs:

7 - 21,

Subtract the smaller number from the

larger number and use the sign of the

larger number:

7 - 21 = -14.

2. 12 - 15 - 10 - 8,

12 - 33 = - 21.

3. 3 - 7 - 4 - 2,

3 - 14 = - 11.

All of the remaining problems are similar to the first three. So let's

try one that's a little different:

-7 + 7 + 7 + 7 =

Add all numbers with like signs:

-7 + 21,

Subtract the smaller number from the larger number and use the sign of the

larger number:

-7 + 21 = 14.

-6 - 5 + 8 + 10 =

-11 + 18 = 7.

I hope this will help.

- 4th grade algebra -
**Henry**, Friday, November 19, 2010 at 7:16pmCORRECTION:

3. 3 - 7 - 4 - 2 =

3 - 13 = 10.

**Answer this Question**

**Related Questions**

geography - which country is the biggest (mongolia,china,southkorea,north korea...

4th grade algebra - What is 16 - 10 - 2 - 3 = ? What is 8 - 2 - 2 - 2 = ? What ...

4th grade algebra - what is 7-7-7-7-7 eguals?

4th grade math - In helping my 4th grade grandson last night with his math, he ...

Math - There are twice as many girls as boys in the 4th grade classes at Joe's ...

Algebra 4th grade - Evaluate each expression for x = 3 2x x (3x) + 5 --- 6

4th grade Algebra - How to solve this problem. 3X-Y=12

Science 4th grade - Why is it important for 4th graders to learn about animals ...

4th grade - 4th grader asks how to solve 8100/?=90

4th grade Algebra - Evaluate the expression 15 - n when n= 9 I am not sure but ...