數學一問~! help....

2007-01-01 1:09 am
答案以最簡形式表示.
a) a.25 b.30 a:b=
b) a.35 b.140 a:b=
c) a.84h b.12h a:b=
d) a.18ml b.27ml a:b=
e) a.900m b.1.3km a:b=
f) a.24min b.900s a:b=

回答 (2)

2007-01-01 1:14 am
✔ 最佳答案
a) a.25 b.30

a:b
= 25:30
= 5:6

b) a.35 b.140

a:b
= 35:140
= 1/4

c) a.84h b.12h

a:b
= 84h:12:h
= 7

d) a.18ml b.27ml

a:b
=18:27
=2:3

e) a.900m b.1.3km

a:b
= 0.9:1.3
= 9/13

f) a.24min b.900s
a:b
= 24x 600 : 900
= 1440:900
= 8/5
2007-01-01 1:20 am
a) a:b=25:30=5:6
b) a:b=35:140=1:4
c) a:b=84h:12h=7:1
d) a:b=18ml:27ml=2:3
e) a:b=900m:1.3km=900m:(1.3*1000)m=9:13
f ) a:b=24min:900s=24min:(900/60)min=8:5


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