问题
解答题
(1)
(2)30:18 (3)
|
答案
(1)
:3 10
=7 15
÷3 10
=7 15
×3 10
=15 7
;15 14
(2)30:18=30÷18=
=30 18
;5 3
(3)
:0.8=5 12
:5 12
=8 10
:5 12
=4 5
÷5 12
=4 5
×5 12
=5 4
.25 48
(1)
(2)30:18 (3)
|
(1)
:3 10
=7 15
÷3 10
=7 15
×3 10
=15 7
;15 14
(2)30:18=30÷18=
=30 18
;5 3
(3)
:0.8=5 12
:5 12
=8 10
:5 12
=4 5
÷5 12
=4 5
×5 12
=5 4
.25 48