a)
0,4 : 2/5=4/10:2/5=4/10*5/2=20/20=1
b)
6/25 : 0,6=6/25:6/10=6/25:3/5=6/25*5/3=2/5=0,4
c)
0,14 : 21/25=14/100:21/25=7/50:21/25=7/50*25/21=1/6
d)
2,4 : 3/8=24/10:3/8=24/10*8/3=32/5= 6 2/5=6,4
e)
0,13 :5 5/12=13/100:65/12=13/100*12/65=13/25*3/65=39/1625=0,024
0,6 * 5/12=6/10*5/12=1/2*1/2=1/4=0,25
4/7 * 0,28=4/7*28/100=1*4/25=4/25=16/100=0,16
0,8 * 5/16=8/10*5/16=1/2*1/2=1/4=0,25
0,21 * 2 2/7=21/10*16/7=3/5*8=24/5=4 4/5=4,8
4 2/3 * 0,0006= 14/3*6/10000=7*2/5000=14/5000=7/2500=0,0028
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a)
0,4 : 2/5=4/10:2/5=4/10*5/2=20/20=1
b)
6/25 : 0,6=6/25:6/10=6/25:3/5=6/25*5/3=2/5=0,4
c)
0,14 : 21/25=14/100:21/25=7/50:21/25=7/50*25/21=1/6
d)
2,4 : 3/8=24/10:3/8=24/10*8/3=32/5= 6 2/5=6,4
e)
0,13 :5 5/12=13/100:65/12=13/100*12/65=13/25*3/65=39/1625=0,024
a)
0,6 * 5/12=6/10*5/12=1/2*1/2=1/4=0,25
b)
4/7 * 0,28=4/7*28/100=1*4/25=4/25=16/100=0,16
c)
0,8 * 5/16=8/10*5/16=1/2*1/2=1/4=0,25
d)
0,21 * 2 2/7=21/10*16/7=3/5*8=24/5=4 4/5=4,8
e)
4 2/3 * 0,0006= 14/3*6/10000=7*2/5000=14/5000=7/2500=0,0028