问题
解答题
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答案
(1)56:32
=(56÷8):(32÷8)
=7:4;
(2)1.8:0.09
=(1.8×100):(0.09×100)
=180:9
=(180÷9):(9÷9)
=20:1;
(3)
=2 46
=(2÷2) (46÷2)
;1 23
(4)
:1 3 2 5
=(
×15):(1 3
×15)2 5
=5:6;
(5)4.6:6.9
=(4.6×10):(6.9×10)
=46:69
=(46÷23):(69÷23)
=2:3;
(6)
:0.253 8
=
:3 8 1 4
=(
×8):(3 8
×8)1 4
=3:2.