Friday

October 24, 2014

October 24, 2014

Posted by **lizzy** on Tuesday, December 20, 2011 at 2:14pm.

1. 7

__2

3

+ 8

__5

6

2. 4

__3

4

+ 2

__2

5

3. 11

___9

10

+ 3

___1

20

4. 7

__6

7

+ 5

__2

7

5. 5

__8

9

+ 3

__1

2

6. 21

___ 11

12

+ 17

__2

3

7. Number Sense Write two mixed numbers that have a sum of 3.

- math -
**Steve**, Tuesday, December 20, 2011 at 3:25pmFractions don't format well here. Try using a/b for fractions.

I'll do #1 and yo can post your own answers for the others, which we will be happy to check.

#1.

7 2/3 + 8 5/6

One way is to add the whole numbers, then add the fractions:

7+8 + 2/3 + 5/6

15 + 2/3 + 5/6

Now, set the fractions over a common denominator:

15 + 4/6 + 5/6

15 + 9/6

Now reduce the improper fraction to a mixed number:

15 + 6/6 + 3/6

15 + 1 + 3/6

16 1/2

Another way is to make everything into fractions first:

7 2/3 + 8 5/6

21/3 + 2/3 + 48/6 + 5/6

42/6 + 4/6 + 48/6 + 5/6

99/6

96/6 + 3/6

16 1/2

**Answer this Question**

**Related Questions**

science - __1.a condition that damages or weakens part of the body __2.the ...

accounting - in the blank space beside each adjustin entry, enter the letter of ...

accounting - in the blank space beside each adjustin entry, enter the letter of ...

nursing - i have to do matching and i can not figure theses out please help me...

Math - what prime numbers do you get when you enter each number from 0 to 10 in ...

math - what prime numbers do you get when you enter each number from 0 to 10 in ...

college math - I do not understand a problem from a text book or how to solve ...

Math - Use fraction strips to find each sum or difference. Simplify if possible...

math - Reasonableness Sun-Yi estimated 270+146 and got 300. Is her estimate ...

math - estimate the sum first then add simplify 2 5/6+9 3/8