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① 直接写出得数。(每题1分,共20分)
48-26=
56+18=
216÷8=
25×4=
287-199=
325+137=
346-123=
639+258=
20÷100=
0.5÷10=
207÷3=
547+318=
872-345=
0.28+0.2=
10-4.3-3.7=
72-29=
22+61=
225÷5=
10.6×1000=
3.8+5.6=
48-26=
56+18=
216÷8=
25×4=
287-199=
325+137=
346-123=
639+258=
20÷100=
0.5÷10=
207÷3=
547+318=
872-345=
0.28+0.2=
10-4.3-3.7=
72-29=
22+61=
225÷5=
10.6×1000=
3.8+5.6=
答案
22
74
27
100
88
462
223
897
0.2
0.05
69
865
527
0.48
2
43
83
45
10600
9.4
74
27
100
88
462
223
897
0.2
0.05
69
865
527
0.48
2
43
83
45
10600
9.4
② 列竖式计算。(每题3分,共12分)
$36.74 - 23.26=$
$21.8 - 8.59=$
$5.66 + 12.83=$
$7.47 + 23.9=$
$36.74 - 23.26=$
$21.8 - 8.59=$
$5.66 + 12.83=$
$7.47 + 23.9=$
答案
竖式略
13.48
13.21
18.49
31.37
13.48
13.21
18.49
31.37
③ 计算下面各题,能简算的要简算。(每题3分,共18分)
$94.6+32.81-14.6$
$54.1-(18.6-14.62)$
$7.48+18.5+0.52$
$8.38-2.17+0.17$
$8.44+9.87+18.56+10.13$
$215×18-15×18$
$94.6+32.81-14.6$
$54.1-(18.6-14.62)$
$7.48+18.5+0.52$
$8.38-2.17+0.17$
$8.44+9.87+18.56+10.13$
$215×18-15×18$
答案
112.81
50.12
26.5
6.38
47
3600
50.12
26.5
6.38
47
3600
