Friday

November 28, 2014

November 28, 2014

Posted by **marko** on Wednesday, December 21, 2011 at 6:05pm.

2) 5/8 - 1/4

i got: 3/8

4) 1 1/2 - 2 4/5

i got: 7/10

6) 5 7/8 + 3 5/12

i got: 9 7/24

10) 3 1/2 + 2 2/5

i got: 5 9/10

18) 6 7/12 + 4 5/12

i got: 11

20) 7 9/10 + 3 3/10

i got: 11 1/5

22) 18 3/8 + 11 6/7

i got: 30 13/56

24) 26 9/10 + 72 5/6

i got: 99 11/15

26) 3/14 + 17/63

i got: 61/126

28) 2 5/6 - 2 5/22

i got: 20/33

30) 3 5/9 - 2 11/12

i got: 23/36

are these right?

- Math add subtract fractions -
**Reiny**, Wednesday, December 21, 2011 at 7:22pmall correct except #4

1 1/2 - 2 4/5

= 3/2 - 14/5

= 15/10 - 28/10

= -13/10 or -1 3/10

If you have a scientific calculator with a key labeled

a b/c , you can perform calculations in fraction form

It will do the required operation such as addition by taking care of finding lowest common denominators etc.

It does of course not show any in-between steps.

e.g. to do 1/2 + 2/3

press:

1

a b/c

2 +

2

a b/c

3

=

to get 1 1/6

if at this point you press

2ndF

a b/c

you will get 7/6 , the improper function

to enter a mixed number like 5 3/4

press:

5

a b/c

3

a b/c

4

Use it only to check your answer, since your teacher will probably insist that you show all steps.

**Answer this Question**

**Related Questions**

mAth EQUATION/FRACTIONS - Solving equations with fractions can you check these? ...

math estimating w/fractions - can you check my answers: estimate w/mixednumbers...

MaTh fractions add subtract - having trouble doing these can you help? 8) 2n/5...

math - Jen, I will attempt to write the others out. #3)ADD: -57 + (-22) I got -...

Algebra - Would someone please check these answers? Simplify. 3/x-5+1/1-4/x-5 ...

math ( subtracting fractions) - 12 1/4- 4 1/8 When you add or subtract fractions...

Math Ms due - Can you pls.check my answers ?? 3+2(4)-3+4(-3)= I got -4 3+4-2-5+3...

algebra addistion - can you check my answers |-13| - |9| i got 4 |15| - |-3| i ...

Algebra - Hi! I was wondering if anyone might be willing to check my answers for...

Math HELP - I have my answers at the bottom but please do these questions so I ...