Question

proszę o obliczeni ( rozpisane)

2 3/16 * 3 1/3 * 2 1/2=

1 7/8 * 3/150 * 4 4/5=

8 2/3 : 5/13=

2 7/10 : 4 1/20=

0,062 * 0,112 =

7,74 : 0,012=

3,897 : 0,045

9 1/7 * 1 1/8 : 2 2/3=

5 20/21 : 5 5/9* 1 19/30 =

8 1/3 : 16 2/3 : 3 1/2=

4/5 z liczby 2,25

Answer 1

2 3/16 * 3 1/3 * 2 1/2 = 35/16 * 10/3 * 5/2 (skracam 10 z 2) = 35/16 * 5/3 * 5 = 875/48 = 18 11/48

 

1 7/8 * 3/150 * 4 4/5= 15/8 * 3/150 * 24/5 = 1080/6000 = 9/50

 

8 2/3 : 5/13= 26/3 : 5/13 = 26/30 * 13/5 = 338/15 = 22 8/15

 

2 7/10 : 4 1/20= 27/10 : 81/20 = 27/10 * 20/81 = 540/810 = 2/3

 

0,062 * 0,112 = 0,006 944

        0,062

    *   0,112

        0 124

      00 62

    006 2

 0,006 944

 

7,74 : 0,012=  645

  645

7740 : 12

72

=54

  48

  =60

    60

    ==

 

3,897 : 0,045 =    88,82

    88,82

3897 : 45

360

=397

 360

 =370

   360

   =100

      90

     =10

 

 

9 1/7 * 1 1/8 : 2 2/3= 64/7 * 9/8 : 8/3 = 64/7 * 9/8 * 3/8 (skracamy 64 z obydwiema 8) = 27/7 = 3 6/7

 

 

5 20/21 : 5 5/9* 1 19/30 = 125/21 : 50/9 * 49/30 = 125/21 * 9/50 * 49/30 = 55125/31500 = 1 23625/31500 = 1 3/4

 

 

8 1/3 : 16 2/3 : 3 1/2= 25/3 : 50/3 : 7/2 = 25/3 * 3/50 * 2/7 (skracamy) = 1/7

 

4/5 z liczby 2,25 = 2,25 * 4/5 = 2 1/4 * 4/5 = 9/4 * 4/5 (skracamy 4) = 9/5 =  1 4/5