1. 直接写出得数。(40☆)
3.5+6.4=
3.7-0.9=
7.75-0.5=
1.4+0.6-1.45=
100-91.6=
102-0.3=
7.05-0.05=
11-3.3-2.7=
9-0.89=
102+0.3=
0.78-0.39=
3.2+2.8+4.3=
13.8-7.1=
427÷10=
3.5+5.5=
3.5-0.8+0.2=
2.1+0.29=
1.12-1.03=
5.5-3.9=
4.6×10÷100=
2.13-0.02=
4.5-0.01=
3.8-0.9=
1.25+5.2+4.8=
0.3+0.75=
3.51+0.2=
10-6.55=
3.5+7.8-6.3=
3.6+1.6=
2.6+1.4=
3.21+16.8=
5.4-0.5-1.4=
0.75×10=
1.9+0.85=
5.34+0.6=
3.5+2.7+0.6=
7.5-0.47=
0.58+0.43=
7.05-5=
3.7+1.8-1.2=

1. 9.9
2.8
7.25
0.55
8.4
101.7
7
5
8.11
102.3
0.39
10.3
6.7
42.7
9
2.9
2.39
0.09
1.6
0.46
2.11
4.49
2.9
11.25
1.05
3.71
3.45
5
5.2
4
20.01
3.5
7.5
2.75
5.94
6.8
7.03
1.01
2.05
4.3

2. 列竖式计算。(18☆)
16.3+63.83=
14.67+13.98=
9.25+12.5=
88.7-21.38=
10.1-4.75=
30-18.76=

2. 80.13
28.65
21.75
67.32
5.35
11.24

3. 计算下面各题,能简算的要简算。(18☆)
35.37+6.49+3.51
150-25.38-74.62
56.1-15.46-26.1
3.75+1.46+1.25+0.54
7.37-(3.88+2.37)
8.19-5.9+12.81-4.1

3. 45.37
50
14.54
7
1.12
11