Question

10000 cl:5-2000 dl:10=?l

4500cl-4000ml=?ml


(8 x 10 hl+6 x 100 dal):7=?kl

[7kl+(4 x 550dal-2 x 10 hl)]:9=?hl

Va dau coroana

Answer 1

1000cl:5-2000dl:10=
=200 cl-200dl=
=200 cl :100-200 dl:10=
=2l-20 l
= - 18 l


4500 cl-4000 ml=
=4500 cl x10-4000 ml
=45000 ml-4000 ml
=41000 ml


(8x10 hl+6 x100 dal) :7=
=(80 hl+600 dal) :7=
=(80 hl :10+600 dal :100):7=
(8 kl+6 kl) :7=
=14 kl:7= 2 kl


[7kl+(4x550 dal-2 x10 hl)] :9=
[7 kl x10+(2200 dal-20 hl)] :9=
=[70 hl +(2200 dal :10-20 hl)] :9=
=[70 hl+(220 hl-20hl)]:9=
=(70hl+200hl):9=
=270 hl:9=30 hl