Tuesday, January 5, 2010

Fractions X

Rem: type in your first name and last initial.

Solve the following problems (simplify)

1. 12 x 2/3

2. 3/10 x 90

3. 1/9 of 54

4. 2/3 x 9/10

5. 14/25 x 15/21

9 comments:

  1. Hannah B.

    1. 12 x 2/3 = 8
    2/3 x 12/1, I crossed out 3 because 3 goes into itself 1 time, then I crossed out 12 and changed it to a 4 because 3 goes into 12 4 times. Then I multiplied 2 x 4 = 8 to get my answer.

    2. 3/10 x 90 = 27
    3/10 x 90/1, I crossed out 10 to make it a 1 then crossed out 90 and made it a 9 because 10 goes into 90 a total of 9 times. Then I multiplied 9 x 3 = 27 for my answer.

    3. 1/9 of 54 = 6
    1/9 x 54/1 then I crossed out the 9 and made it into a 1 and I crossed out the 54 and made it into a 6 because 9 goes into 54 a total of 6 times. Then I multiplied 6 x 1 to get my answer.

    4. 2/3 x 9/10 =15
    First I crossed out the 3 and made it a 1 then I crossed out the 9 and made it a 3 because 3 goes into 9 a total of 3 times. Then I crossed out the 10 and made it a 1 and then I crossed out the 2 and made it a 5 because 2 goes into 10 a total of 5 times. Then I multiplied 5 x 3 to get my answer.

    5. 14/25 x 15/21 = Unsure

    ReplyDelete
  2. monique J
    1.12/1 x 2/3= 24/3=8
    2.3/10 x 90/1=270/10=27/10=2 7/2
    3.1/9 x 54/1=54/9= 6
    4.2/3 x 9/10=18/30
    5.14/25 x 15/21=380/525

    ReplyDelete
  3. Malorie G.


    1.) 4/1*2/1=8/1=8

    2.) 3/1*9/4*=12/1=12

    3.) 1/1*6/1=6/1=6

    4.) 2/1*3/2=6/2*2=3/1=3

    5.) 14/5*5/21=16/25

    ReplyDelete
  4. Sean M.

    i used the % key as the divide symbolm.

    1. 12/1 x 2/3
    12%3=4
    2%1=2
    4/1 x 2/1 = 8/1
    4%4=2
    2%2= 1

    2.3/10x90/1
    3/1 x 9/1= 27/1

    3. 1/9 of 54
    1/9 x 54/1
    9%3= 3%3=1

    4.2/3x9/10
    5/1 x 3/1=15

    5. 14/25x15/21

    ReplyDelete
  5. Matthew C.

    1. 4/1 x 2/1= 8

    2. 3/1 x 9/1= 27

    3. 1/1 x 6/1= 6

    4. 1/1 x 3/5= 3/5

    5. 2/5 x 3/3= 6/15 = 2/5

    ReplyDelete
  6. Cameron.G

    1. 12*2/3 12 goes into 3 4 times.
    2. 3/10*90 10 goes inot 90 9 times.
    3. 1/9*54 9 goes nto 54 6 times.
    4. 2/3*9/10 3 goes into 9 3 times and 2 goes into 10 5 times and it equals 3/5.
    5. 14/25*15/21 5 goes into 25 5 times and your awnswer is 42/105.

    ReplyDelete
  7. Emmanuelle D.
    1. 12/1 x 2/3 = 24/3 divided by 3/3 = 8

    2. 3/10 x 90/1 = 270/10 divided by 10/10 = 27

    3. 1/9 x 54/1 = 54/9 = 6

    4. 2/3 x 9/10 = 18/80 divided by 2 = 9

    5. 14/25 x 15/21 = 210/525 = 42/25

    ReplyDelete
  8. Jessica J.

    1. 12x2/3=8 First I changed the problem to 12/1x2/3 Then I saw how many times 3 went into 12 wich was 4. So i crossed out the 12 and made it a 4.Then I crossed out the 3 and made it a 1 in 2/3. I did my final problem wich was 2x4 and got 8.

    2.3/10x90=27 First i changed my problem to 3/10x90/1.Then I saw how many times 10 went into 90 wich is 9.Then I crossed out the 10 and made it a 1 in 3/10. I did my final problem wich is 3x9 and got 27 as my answer.

    3.1/9x54=6 First I made my problem into 1/9x54/1.Then I saw that 9 went into 54 6 times. So I crossed out the 54 and made it a six. Then I crossed out the 9 in 1/9 and made it a 1. Then I did my final problem wich was 1x6 and got 6 as my answer.

    4.2/3x9/10 First I saw how many times 3 went into 9 wich is 3 times. So I crossed out the nine and made it a 3. Then I saw how many times 2 went into 10 wich is 5. Then I got my final problem wich was 5x3 and got 15.

    5.14/25x15/21=42 First I saw how may times 5 went into 15 wich is 3.I crossed out the 15 and made it a 3. Then i made the denominaters a 1. I left 14 the same. I got my final problem wich was 14x3 and my answer was 42.

    ReplyDelete
  9. Megan H.

    1) 2/1 % 2/3= 8
    2) 3/10 % 90/1= 27
    3) 1/9 % 54/1= 6
    4) 2/3 % 9/10= 3/5
    5) 14/25 % 15/21= 42

    ReplyDelete