1. 直接写出得数。(20☆)
12.3−0.5=
51.3÷0.3=
7.8÷2.6=
22.6×0.4=
12.6÷0.6=
12.6÷0.3=
10.5×0.5=
12.5÷0.5=
0.2×0.8=
58.6÷0.2=
0.4×0.16=
22.6×4=
0.6÷0.3=
24.3÷0.3=
44.5÷0.5=
0.12×0.8=
4.5÷0.5=
56.3+11.2=
49−44.5=
22.6÷0.2=
14.7÷0.7=
36.9÷0.9=
5.4÷1.8=
1.5×0.7=
0.7×0.8=
72.3×0.8=
51.3×0.8=
0.9÷0.9=
1.2×0.7=
7.6×0.8=
15÷0.5=
3×0.8=
5.6÷0.7=
7.2÷0.4=
72.8÷0.8=
2.3÷0.23=
52.2−0.76=
51.2÷0.4=
0.56÷0.7=
99.9÷0.9=
12.3−0.5=
51.3÷0.3=
7.8÷2.6=
22.6×0.4=
12.6÷0.6=
12.6÷0.3=
10.5×0.5=
12.5÷0.5=
0.2×0.8=
58.6÷0.2=
0.4×0.16=
22.6×4=
0.6÷0.3=
24.3÷0.3=
44.5÷0.5=
0.12×0.8=
4.5÷0.5=
56.3+11.2=
49−44.5=
22.6÷0.2=
14.7÷0.7=
36.9÷0.9=
5.4÷1.8=
1.5×0.7=
0.7×0.8=
72.3×0.8=
51.3×0.8=
0.9÷0.9=
1.2×0.7=
7.6×0.8=
15÷0.5=
3×0.8=
5.6÷0.7=
7.2÷0.4=
72.8÷0.8=
2.3÷0.23=
52.2−0.76=
51.2÷0.4=
0.56÷0.7=
99.9÷0.9=
答案
1. 11.8
171
3
9.04
21
42
5.25
25
0.16
293
0.064
90.4
2
81
89
0.096
9
67.5
4.5
113
21
41
3
1.05
0.56
57.84
41.04
1
0.84
6.08
30
2.4
8
18
91
10
51.44
128
0.8
111
171
3
9.04
21
42
5.25
25
0.16
293
0.064
90.4
2
81
89
0.096
9
67.5
4.5
113
21
41
3
1.05
0.56
57.84
41.04
1
0.84
6.08
30
2.4
8
18
91
10
51.44
128
0.8
111
2. 下图中每个小方格的面积是1 cm²,估计涂色部分的面积。(9☆)
(
(
(
7
) cm²13
) cm²14
) cm²答案
2. 7 13 14
(合理即可)
(合理即可)
3. 计算下面各图形涂色部分的面积。(单位:dm)(21☆)

用时:分钟 共得:☆/50 ☆
用时:分钟 共得:☆/50 ☆
答案
3. (8.5+15)×13÷2−8.5×4÷2=135.75(dm²)
5×4.5−(2+3)×3÷2=15(dm²)
16×10−(8+16)×(10−4)÷2=88(dm²)
5×4.5−(2+3)×3÷2=15(dm²)
16×10−(8+16)×(10−4)÷2=88(dm²)
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