1. 直接写出得数。(20☆)
3.5×0.4=
7.2÷8=
15×0.5=
0.66÷3.3=
5×1.5=
0.24÷0.6=
5.3×0.4=
4.7×30=
132÷0.4=
8×0.14=
0.45÷0.5=
2.1×5=
7.4×2=
0.2×0.75=
5.1÷0.3=
1.6×0.5=
3.6×7=
9.4÷0.02=
2.7×0.3=
9.1÷0.13=
3.9÷30=
1.07×5=
1.8÷0.9=
700÷0.7=
0.48÷0.08=
0.6×0.15=
0.22÷1.1=
0.72÷4=
49÷0.07=
0.39÷0.13=
4.41÷3=
0.99÷9=
64÷0.08=
6×0.15=
27×0.8=
0.6÷10=
0.93÷3=
0.7×0.5=
1.5÷0.5=
2.15×0=

1. 1.4 0.9 7.5 0.2
7.5 0.4 2.12 141
330 1.12 0.9 10.5
14.8 0.15 17 0.8
25.2 470 0.81 70
0.13 5.35 2 1000
6 0.09 0.2 0.18
700 3 1.47 0.11
800 0.9 21.6 0.06
0.31 0.35 3 0

2. 根据剪下的长方形纸条的长度计算面积,并完成下表。(12☆)

2. 19.8 47.3 50.6 57.75 158.4 5.5x

3. 计算下面各题,能简算的要简算。(18☆)
1.2×(0.138÷0.23)
19.8÷(54.5-51.2)
88×0.25÷40
(8.1-5.4)÷3.6+85.7
5.7×3.9+4.3×3.9
10.7-22.78÷3.4
用时：分钟 ★共得：☆/50 ☆

3. 0.72 6 0.55
86.45 39 4