Question

求比值化简比

1求比值
8/5 : 2/5 = 15.6 : 1.17 = 4.375 : 1.875 = 2 : 35/6 = 1/4 : 3/4 = 1.5 : 2.4=
5/8 : 1/8 = 2/9 : 1/7 = 5/6 : 1/3 =
2化简比
3.5 : 8.4 = 1.2 : 1.4 = 3/10 : 4/25 = 9/2 : 12 = 9/4 : 9/4 = 24 : 18 =
12厘米 ：60米 = 1小时 ： 1小时30分 = 1.8 : 27 = 3.125 : 5/4 =

Answer 1

1求比值
8/5 : 2/5
=8/5×5/2
=4
15.6 : 1.17
=1560÷117
=(1560÷39)÷(117÷39)
=40÷3
=40/3
4.375 : 1.875
=4又3/8 : 1又7/8
=35/8 :15/8
=35/8×8/15
=7/3
2 : 35/6
=2×6/35
=12/35
1/4 : 3/4
=1/4×4/3
=1/3
1.5 : 2.4
=1又1/2 : 2又2/5
=3/2 : 12/5
=3/2×5/12
=5/8
5/8 : 1/8
=5/8×8
=5
2/9 : 1/7
=2/9×7
=14/9
5/6 : 1/3
=5/6×3
=5/2
2化简比
3.5 : 8.4
=(3.5×10) : (8.4×10)
=35 : 84
=(35÷7) : (84÷7)
=5 : 12
1.2 : 1.4
=(1.2×5) : (1.4×5)
=6 : 7
3/10 : 4/25
=(50×3/10) : (50×4/25)
=15 : 8
9/2 : 12
=(9/2×2/3) : (12×2/3)
=3 : 8
9/4 : 9/4
=(9/4×4/9) : (9/4×4/9)
=1 : 1
24 : 18
=(24÷6) : (18÷6)
=4 : 3
12厘米：60米
=12厘米：6000厘米
=(12÷12)：(6000÷12)
=1 ：500
1小时：1小时30分
=1小时：1.5小时
=(1×2)：(1.5×2)
=2：3
1.8：27
=(1.8×5)：(27×5)
=9：135
=(9÷9)：(135÷9)
=1：15
3.125：5/4
=3又1/8：5/4
=11/8：5/4
=11/8×4/5
=11/10
=11：10

Answer 2

8/5 : 2/5 = 15.6 : 1.17 = 4.375 : 1.875 = 2 : 35/6 = 1/4 : 3/4 = 1.5 : 2.4=
5/8 : 1/8 = 2/9 : 1/7 = 5/6 : 1/3 =
2化简比
3.5 : 8.4 = 1.2 : 1.4 = 3/10 : 4/25 = 9/2 : 12 = 9/4 : 9/4 = 24 : 18 =
12厘米 ：60米 = 1小时 ： 1小时30分 = 1.8 : 27 = 3.125 : 5/4 =

Answer 3

自己做