Question

0,25 - 0,025=
4.Zamień ułamki dziesiętne na zwykłe i oblicz.
1,625*2 i 2/5=
1 i 1/7:0,8=
4,25*2 i 2/3=
4 i 1/2:0,9=
6,125*1 i 3/7= THX!

Answer 1

0,25 - 0,025= 0,225


zad 4.

1,625 * 2 i 2/5=

1 i 625/1000 * 12/5=

= 1625/1000 * 12/5 =  (skracam  ułamki)

= 325/250 * 3/1=

= 975/250=

= 3 i 225/250=

= 3 i 9/10




1 i 1/7 : 0,8=

= 8/7 : 8/10=

= 8/7 * 10/8  = (skracam ułamki)

= 1/7 * 10/1=

= 10/7=

= 1 i 3/7




4,25 * 2 i 2/3=

= 4 i 25/100 * 8/3=

= 4 i 1/4 * 8/3=

= 17/4 * 8/3 =  ( skracam 4 z 8)

= 17/1 * 2/3=

= 34/3=

= 11 i 1/3




4 i 1/2 : 0,9=

= 9/2 : 9/10=

= 9/2 * 10/9 = (skracam ułamki)

= 1/1 * 5/1=

= 5/1=

= 5





6,125 * 1 i 3/7 =

= 6 i 125/1000 * 10/7=

= 6 i 1/8 * 10/7=

= 49/8 * 10/7 = (skracam ułamki)

= 7/4 * 5/1=

= 35/4=

= 8 i 3/4