Question

Rozwiążcie te przykłady . Liczby wymierne - mnożenie i dzielenie . Nie chce samego wyniku tylko rozpisane działanie .

0,04*(-0,27)=

(-3,6)*4/9=

(-2,1)*(-4 i 2/7)=

(-7/8):(-5,6)=

9/10:(-3/4)=

(-1 I 1/2):(-0,06)

(-2 i 2/3):1,2=

2/3:(-6)=

(-0,45):1 i 4/5=

(-2,75):(-2,2)=

(-3,5):(-1 i 2/5)=

Pilneeee !

Pamiętajcie , ze 2 minusy daja wynik plusowy , dwa plusy daja wynik plusowy , a plus i minus daja wynik minusowy :D

Answer 1

0,04*(-0,27)= -0,0180 lub 4/100*(-27/100)= -108/10000

 

(-3,6)*4/9= (-36/10)*4/9= -144/90= -1 i 54/90= -1 i 27/45

 

(-2,1)*(-4 i 2/7)= (-21/10)*(-30/7)= 630/70= 9

 

(-7/8):(-5,6)= (-7/8):(-56/10)= (-7/8)*(-10/56)= 70/448 = 6,4 lub  = 35/224

 

9/10:(-3/4)= 9/10 * (-4/3)= -36/30= -1,2    lub    =-1 i 6/30= -1 i 1/5

 

(-1 I 1/2):(-0,06)= (-3/2):(-6/100)= (-3/2)*(-100/6)= 300/12 = 25

 

(-2 i 2/3):1,2= (-8/3):12/10= (-8/3)*10/12= -80/36= -2 i 8/36= -2 i 2/9

 

2/3:(-6)= 2/3 * (-1/6) = -2/18 = -1/9

 

(-0,45):1 i 4/5= (-45/100) : 9/5= (-45/100) * 5/9= -225/900= -1/4

 

(-2,75):(-2,2)= (-275/100):(-22/10)= (-275/100)*(-10/22)= 2750/2200= 1 i 55/220

 

(-3,5):(-1 i 2/5)= (-35/10):(-7/5)= (-35/10)*(-5/7)= 175/70=2 i 35/70 = 2 i 1/2

Answer 2

0,04*(-0,27)= -0,0108

-3 i 6/10 * 4/9 = 36/10 * 4/9 = -8/5

-2 i  1/10 * -4 i 2/7 = -21/10 * -30/7 = 9/1 = 9

-7/8 : -5 i 6/10 = -7/8 : -56/10 = -7/8 * (-10/56) = 5/32

9/10: ( -3/4) = 9/10 * ( -4/3) = -6/5

(-1i1/2) : ( -0,06) = (-3/2) : ( - 6/100)= (-3/2) * (-100/6)= 50/2 = 25

(-2 i 2/3) : 1,2 = (-8/3) : 12/10 = (-8/3) * 10/12 = - 20/9 = (-2 i 2/9)

2/3 : ( - 6) = 2/3 : (-6/1) = 2/3 * ( -1/6) = (-1/9)

(-0,45) : 1/45 = (-45/100) : 9/5 = (-45/100) *5/9 =(- 5/20) = (-1/4)

( -2,75) : (-2,2) = (-2 i 75/100) : (-2 i 2/10) =  -275/100 : 22/10 = 275/100 * 10/22 =275/220 = 1i25/220

(-3,5) : (-1 i 2/5) = ( -3i 5/10) : (-1i2/5= (-35/10) : (-7/5) = (- 35/10 * (-5/7) = 5/2