题目内容

用竖式计算并验算．
53+5.67
7.2-6.45．
53+5.67=58.67．

验算：


7.2-6.45=0.75．

验算：
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直接写得数．
56+2.4=______		1-0.48=______0.81÷3=______
0.5×2.4=______4×0.24+0.24=______5-5=______
3.2÷0.4=______0.05×20=______8.2÷0.01=______
6.8-1.3-2.7=______．
直接写出得数
1-0.375=		0.125×8=280-45=1.3÷0.25=
400÷600=8.64×100=
1
2
+
1
4
=
1
2
-
1
5
=
2
3
×
3
8
=
3
4
÷
1
2
=		12×
5
6
=		6÷
2
3
=
直接写出得数．
1.87+5.3=		2.5×2.4=
1
3
+
2
5
=
4
7
×
7
8
=
1÷10
2
9
=		7.2×
3
8
=		8
1
3
-3
4
7
=		15.16+9
1
2
=
直接写出得数：
2.64+3.6=		2.4×50=2+7÷9=0.3÷3%=
一位会计把一笔488元的收入账错误地记成了48.8元．他在结账时将会发现______．
直接写出得数．
1
6
×12=
1
8
+
1
2
=		10×
4
5
=
5
9
-
1
3
=		1÷
1
4
=
12÷
2
3
=
3
10
÷
3
5
=
1
3
×
3
5
=
3
5
÷
4
3
=
5
14
÷
5
7
=
18+46=2.5×0.8=3.8-0.9=36÷2=3.5÷0.5=
用竖式计算．
26.7+147.2=		801.6-21.9=20-0.85=15.78+2.45=
33.4-9.48=13.1+120.95=100-19.2=
用简便方法计算．
15-0.3=		6-0.5=3.9+12.1=2.13+14=0.91+1.25=
10-0.76=3.99-0.9=0.567+4.44=0.37+0.6=7.46+2.54=
1-0.08=45.9+1=6.87-3.25=0.25+0.75=0.78+0.22=
6.1-5.7=

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