Răspuns :
a ) 3/10 din 400 :
(400:10)•3=
40•3=120
400+120=520
b ) 4/5 din 400 :
(400:5)•4=
80•4=320
400+320=720
c ) 25% din 400 :
(25•400):100=
10000:100=100
400+100=500
d ) 3/8 din 400 :
(400:8)•3=
50•3=150
400+150=550
e ) 13/16 din 400 :
(400:16)•13=
25•13=325
400+325=725
(400:10)•3=
40•3=120
400+120=520
b ) 4/5 din 400 :
(400:5)•4=
80•4=320
400+320=720
c ) 25% din 400 :
(25•400):100=
10000:100=100
400+100=500
d ) 3/8 din 400 :
(400:8)•3=
50•3=150
400+150=550
e ) 13/16 din 400 :
(400:16)•13=
25•13=325
400+325=725
A)
400+ 400x3/10
= 400+ 1200/10
= 400+ 120
= 520
B))
400+400x4/5
= 400+ 1600/5
= 400+320
= 720
C))
400+400x25/100
= 400+400/4
= 400+100
= 500
D))
400+400x3/8
= 400+50x3
= 400+150
= 550
E))
400+400x13/16
= 400+25x13
= 400+325
= 725
Sper ca te-am ajutat !
400+ 400x3/10
= 400+ 1200/10
= 400+ 120
= 520
B))
400+400x4/5
= 400+ 1600/5
= 400+320
= 720
C))
400+400x25/100
= 400+400/4
= 400+100
= 500
D))
400+400x3/8
= 400+50x3
= 400+150
= 550
E))
400+400x13/16
= 400+25x13
= 400+325
= 725
Sper ca te-am ajutat !