lets se whos smarter than a fifth grader part 2 (mixed fractions)?

Question

1. 2 1/5 + 3 1/5=
2. 3 5/8 + 1 4/7=
3. 2 7/10 + 5 1/12=
4. 6 3/5 - 2 1/5=
5. 7 4/5 + 4 1/9=
6. 8 6/10 - 3 2/8=
7. 4 2/3 + 1 4/5=
8. 12 4/5 - 3 1/2=
9. 7 6/8 multiply 3 4/9=
10. 12 1/4 divided by 3 5/8=
11. 10 2/3 divided by 4 1/7=
12. 5 7/8 divided by 1 1/3=

13. if a restaurant has 2 1/4 cherry pies, 4 3/4 apple pies, and 1/2 of a blueberry pie remaining after dinner one night, how many pies are left?

14. if lisa has 2/3 of her homework pages done, and jennifer has only 1/8 of that amount done, how much has jennifer completed?

15. denise has 16 2/3 share of stock in a phone company. she wants to divide them equally among 4 of her nieces. if she does this, how many shares will each niece recieve.

Answer 1

1. 2 1/5 + 3 1/5= 5 2/5
2. 3 5/8 + 1 4/7= 5 11/56
3. 2 7/10 + 5 1/12= 7 47/60
4. 6 3/5 - 2 1/5= 4 2/5
5. 7 4/5 + 4 1/9= 11 41/45
6. 8 6/10 - 3 2/8= 5 7/20
7. 4 2/3 + 1 4/5= 6 7/15
8. 12 4/5 - 3 1/2= 9 3/10
9. 7 6/8 multiply 3 4/9= 26 25/36
10. 12 1/4 divided by 3 5/8= 3 11/29
11. 10 2/3 divided by 4 1/7= 2 50/87
12. 5 7/8 divided by 1 1/3= 4 13/32

13. if a restaurant has 2 1/4 cherry pies, 4 3/4 apple pies, and 1/2 of a blueberry pie remaining after dinner one night, how many pies are left? 6 1/2 pies

14. if lisa has 2/3 of her homework pages done, and jennifer has only 1/8 of that amount done, how much has jennifer completed? 1/12 of her homework

15. denise has 16 2/3 share of stock in a phone company. she wants to divide them equally among 4 of her nieces. if she does this, how many shares will each niece recieve.
4 1/6

Answer 2

Well, since there's so much here, let's do the
addition parts in a different way.
Get good at it and you can even do these in your head!
1. Simple rule: When adding mixed numbers like
these add the whole number parts, then the fractions
and combine.
So 2 1/5 + 3 1/5 = 5 + (1/5 + 1/5) = 5 2/5.

2. 3 5/8 + 1 4/7.
Again we have (3+1) + (5/8 + 4/7)
Whole number part = 4
Now add 5/8 + 4/7
It is a rule that a/b + c/d = (ad + bc)/bd
But this gives a way to add to fractions with
different denominators:
We call it "down product"(ad) + "up product"(bc)
divided by "bottom product"(bd).
So 5/8 + 4/7 = (5*7+8*4)/56 = 67/56
Finally we get 4 67/56 or, since 67/56 = 1 11/56,
5 11/56.
Try no.7 this way:
4 2/3 + 1 4/5
Whole number part = 5
2/3 + 4/5 = 22/15 = 1 7/15.
Answer: 6 7/15.

Am I smarter than a 5th grader? Only time
will tell! LOL

Answer 3

1. 5 2/5
2. 5 11/56
3. 7 47/60
4. 4 2/5
5. 11 41/45
6. 5 7/20
7. 6 7/15
8. 9 3/10
9. 26 25/36
10. 2 111/116
11. 2 50/87
12. 4 13/32
13. 7.5
14. 1/12
15. 4 1/6

Answer 4

I do not need to answer those questions to prove that I am smarter than a fifth grader. Everyone that knows me knows that I am smarter than a fifth grader.

Answer 5

1. 5 2/5

Do your homework

My math teachers name was Mrs. Jones.

Answer 6

Nice try. Do your home work yourself.