一、口算。
0.4×0.6 =
3.5÷0.07 =
4.25 + 5.75 =
6.8 - 0.08 =
0.08 + 1.2 =
0.35×60 =
70÷3.5 =
15×0.2 =
1.5 - 0.375 =
0.25×0.03 =
80÷160 =
0.75 + 0.25 =
1.2÷0.03 =
2.39 + 0.65 =
0.99 - 0.9 =
47 + 63 =
200×0.45 =
1.6÷0.25 =
1 - 0.84 =
4.8÷1.2 =
2.07 + 1.83 =
1.25÷0.25 =
0.4 + 0.2 =
0.85÷5 =
25×120 =
4.8 - 0.62 =
0.2×0.5 =
1.3 + 0.13 =
0.125×100 =
80÷0.4 =

0.24 50 10
6.72 1.28 21
20 3 1.125
0.0075 0.5 1
40 3.04 0.09
110 90 6.4
0.16 4 3.9
5 0.6 0.17
3000 4.18 0.1
1.43 12.5 200

二、计算下面各题，怎样简便就怎样计算。
0.15 + 0.85×4÷2
(360 - 144)÷24×3.6
7.05 - 0.24 - 1.76 + 5.95

1.85 32.4 11