一、直接写出得数。(每题1分,共32分)
2.16-0.6=
8-1.52=
1.6×9=
75÷5-13=
4.1+2.4=
5.5÷5=
10.3×10=
28×2÷10=
0.12×100=
4.7×100=
20÷8=
72÷4+12=
0.76÷4=
29.4÷7=
1.44÷4=
806×(32÷16)=
0.14×3=
2.6÷13=
2.5×40=
92×9+92=
0.125×20=
7.2×4=
7.2×5=
6+2.2+3.8=
7.5+1.5=
10.5-5.8=
2.5÷10=
125-78+75=
1.5-0.6=
8.8÷44=
5.05×2=
248-98-2=
2.16-0.6=
8-1.52=
1.6×9=
75÷5-13=
4.1+2.4=
5.5÷5=
10.3×10=
28×2÷10=
0.12×100=
4.7×100=
20÷8=
72÷4+12=
0.76÷4=
29.4÷7=
1.44÷4=
806×(32÷16)=
0.14×3=
2.6÷13=
2.5×40=
92×9+92=
0.125×20=
7.2×4=
7.2×5=
6+2.2+3.8=
7.5+1.5=
10.5-5.8=
2.5÷10=
125-78+75=
1.5-0.6=
8.8÷44=
5.05×2=
248-98-2=
答案
1.56
6.48
14.4
2
6.5
1.1
103
5.6
12
470
2.5
30
0.19
4.2
0.36
1612
0.42
0.2
100
920
2.5
28.8
36
12
9
4.7
0.25
122
0.9
0.2
10.1
148
6.48
14.4
2
6.5
1.1
103
5.6
12
470
2.5
30
0.19
4.2
0.36
1612
0.42
0.2
100
920
2.5
28.8
36
12
9
4.7
0.25
122
0.9
0.2
10.1
148
二、当$m=20$时,计算下面各式的值。(每题2分,共12分)
$113.7 - m =$
$2m + 5m =$
$4m × 20 =$
$58m - 8m =$
$45m - 5 =$
$6m - m ÷ 4 =$
$113.7 - m =$
$2m + 5m =$
$4m × 20 =$
$58m - 8m =$
$45m - 5 =$
$6m - m ÷ 4 =$
答案
93.7
140
1600
1000
895
115
140
1600
1000
895
115
三、用竖式计算,带☆的要验算。(每题3分,验算各1分,共20分)
58.24 + 9.98 =
4.8×25 =
☆7.86÷12 =
7.84÷28 =
☆5.02×26 =
603.2÷58 =
58.24 + 9.98 =
4.8×25 =
☆7.86÷12 =
7.84÷28 =
☆5.02×26 =
603.2÷58 =
答案
68.22
120
0.655
0.28
130.52
10.4
竖式及验算略
120
0.655
0.28
130.52
10.4
竖式及验算略
四、计算下面各题,能简算的要简算。(每题3分,共18分)
187÷25÷4
8.7+9.5+1.3+1.5
125÷5×8-20
79×16+16×21
(326+95×5)÷9
3000-(32+8)×30
187÷25÷4
8.7+9.5+1.3+1.5
125÷5×8-20
79×16+16×21
(326+95×5)÷9
3000-(32+8)×30
答案
1.87
21
180
1600
89
1800
21
180
1600
89
1800
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