Question

Oblicz:
a) 1,5 + 4 * 1/4 = 1,5 + 1 =
b) 1,4 - (0,2 + 4/5) =
c) 3/5 : (2 * 0,5) =
d) 3/4 * 8 : 1/2 =

Answer 1

a) = 1,5 + 1 = 2,5

b) = 1,4 - (0,2 + 0,8) = 1,4 - 1 = 0,4

c) = 0,6 : 1 = 0,6

d) = 24/4 * 2/1 = 48/4 = 12

Answer 2

A)

1,5+4*1/4= (skracam 4 z 4)

= 1,5 + 1 * 1/1 =

= 1,5 + 1/1=

= 1,5+ 1=

= 2,5

B)

1/4-(0,2+4/5)=

= 1/4 - (2/10 + 8/10) =

= 1/4 - 10/10 =

= 1/4 - 1=

= - 3/4

C)

3/5:(2 * 0,5)=

= 3/5 : 1=

= 3/5 * 1/1=

= 3/5

D)

3/4 * 8 : 1/2=

= 3/4 * 8 * 2/1= (skracam 4 z 8)

= 3/1 * 2 * 2=

= 12/1=

= 12