五年级上册数学小数加减法口算练习题
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五年级上册数学小数加减法口算练习题
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五年级上册数学小数加减法口算练习题
0.78
,
0.06,
.1,0.68,.8
,
6.4,
0.42
,
0.39,
12.8,
9.8,10.5,6.5,.8
,
2,5.7
,
3.8,
0.8,0.08,10,0.36,
1,0.65,4.2,3.02,
2.1+0.2=
0.3+0.7=3.6+1.6=7.5-0.5= .7-0.9=
2.13-0.02=.51+0.2=102+0.3=
1.12-1.02=.5-0.01=
0.7
,
0.9= 0.8
,
0.6=.24
,
3.
76=.1,3.8= 14
,
0.78=
14.6,0.34= 1.3
,
8.56=
0.8,0.55=,0.04=1,0.03=0.5
,
3.05= 0.8,0.45= 0.78
,
2.2=,
0.08=3.25
,
0.75=
10,
0.1= 0.35+0.2=
1.6-0.7=0.39+0.21= 1.25-0.95=8.23-3.2=
1.2-0.25=4.65+2.4= 1.21+0.19=
0.7
,
0.9= 0.8
,
0.6=8.24
,
3.76=
.1,3.8=14
,
0.78=
14.6,0.34=1.3
,
8.56=0.8,
0.55=,0.04=
1,0.03=0.5
,
3.05= 0.8,0.45=
0.78
,
2.2=5,0.08=
.25
,
0.75= 10,0.1=
1.5,0.5,1,0.9,.3
,
0.6,0.9
p>
,
0.8,
1.9,0.9=.5-.4=
0.36
,
0.64, 0.96,0.3
3.5+.2= -0.5=.7-0.4= 1-0.3= 0.8+
0.7=.5-3=.8-1.1= .4-1.5=
1.5,0.5,
1,0.9,.3
,
0.6,
0.9
,
0.8,
1.9,0.9= .-2.4=
0.36
,
0.64, 0.96,0.3=
3.2+1.8=0.9+0.6=0.1,0.01= 1.2,0.12
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1,0.385=3.2,2.3=0.76,0.315,7.35,2.65 <
/p>
0.75
,
0.4,0
< br>,
0.78,4.8
,
4.2,
.7,3,
4.9,1.7,
1.34
,
0.8,
,0.75,8.7
,
0.03, 0.2,0.09,.5<
/p>
,
2.5,1.36
,
< br>0.4,.5
,
2.5,
1,0.45,100
,
0.97,
0.17
,
0.3, 0.82,0.22,
0.7
,
0.9= 0.8
,
0.6=.24
,
3.76=.1,3.8=
14
,
0.78= 14.6,0.34=
1.3
,
8.56= 0.8,0.55=,0.04=1
0.78
,
2.2=
,0.03=0.5,0.08=3.25
,
3.0
5= 0.8
,
0.75= 10,0.45= ,0.1=
一、口算。
2.1+0.2=
0.3+0.7=.6+1.6=.5-0.5=.7-0.9=
2.13-0.02=3.51+0.2= 102+0.3=
1.12-1.02=.5-0.01=
二、火眼金睛辩对错,并且改正。
12.45,1.35,0.6521.32,
=21.32,6.32+8.3=12.45, =15+8. =12.45,2
=23. =10.45
三、用简便方法计算。
27.3+73.2+72.785+189+21.85,1.75,0.25
768,274,12 .85+1.89+2.124.8+14.6+15.4
42.5,22.17,7.3.8+1.37+6.2+12.63
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四、火眼金睛辩对错。
整数加法交换律、结合律对小数同样适用