五年级下册口算.doc

一
0.75＋4.25= 4.2×5= 4.7＋2.3= 6－3.4= 0.75×100= 5.6÷100= 2.5×4= 10－9.25= 0.06×1.5= 0.3÷0.5= 0.7×0.8= 1＋0.01= 0.1÷0.01= 2.1÷0.7= 1－0.34= 0.175＋0.0225=
8×0.125= 5.6＋3.8= 0.62－0.32= 0.02×0.5=

二
0.75÷0.25= 16.8÷4= 0.1÷100= 6.3÷0.9=
0.25×8= 0.04×2.5= 1×0.01= 0.1＋0.01=
0.63÷0.9= 0.6＋0.54= 8.9－0.9= 0.96÷2=
5.9－2.5= 4.5×2= 3.6÷3= 0.125×8=
0.53×1000= 72.8×0.01= 1÷125= 1.2÷0.2=

三
1÷0.01= 48÷0.6= 20÷0.2= 1×0.4=
9.63÷3= 7－0.23= 4.8÷0.3= 7.2－0.8=
1.4×0.5= 29÷100= 6.3÷0.7= 6＋2.4=
12.5×8= 8.9×0= 0.78÷3= 0.35÷0.5=
9.36÷0.9= 100÷0.4= 0.81＋0.09= 0.4×0.9=

四
10－5.4＝ 4÷20＝ 3.5×200＝ 1.5－0.06＝
0.75÷15＝ 0.4×0.8＝ 4×0.25＝ 0.36＋1.54＝
1.01×99＝ 420÷35＝ 25×12＝ 135÷0.5＝
+＝ - ＝ +＝ - ＝ 1- ＝ +＝ - ＝ +＝

五
-＝ ++＝ 1-＝ -＝ -＝ +＝ -＝ +＝ ++＝ 1--＝ -＝ +＝
+＝ +＝ -＝ -＝ -＝ -＝ +＝

六
8.9－(3+0.9)= 7÷8= 1.5＋2.45=
2×1.7+2×1.3= 0.4×101－0.4= 1.25×0.7×0.8=
0.79+0.79×99＝ 1÷5+1÷5＝ 0.89×101-0.89＝ 2－0.64－0.36﹦ 1.1-2.7÷27＝ 12.4×11-12.4= 1.25×3.3×0﹦ 20－3.7－7.3= 5×0.75÷1.5×0.75=
1-0.1×0.1= 6×0.125×8= 1×0.4÷1×0.4= 37.2×99＋37.2= 25×4÷0.25×4=

七
9÷5－1.9÷5﹦ 6.8-2.4÷3= 0.6÷0.3+0.5= 1.9+5.1÷51= 1.8÷0.9×0.5= 12-0.05×4= 1×0.01÷0.1= 7.2-1.2+6.7= 25×3.3×0﹦
0.6×2.5= 7×0.03= 12.5÷2.5= 2.8×0.3= 1.8×50= 64÷1.6= 0.48×0.2= 5.4÷0.27= 10－0.13= 4.5÷0.01= 0.9×7+10.7=

八
0.75×100= 5.6÷100= 2.5×4= 10-9.25=
0.06×1.5= 0.3÷0.5= 0.7×0.8= 0.1÷0.01=
2.1÷0.7= 1－0.34= 0.175＋0.25= 8×0.125=
5.6＋3.8= 0.62－0.32= 0.02×0.5= 0.75÷0.25=
16.8÷4= 0.1÷100= 6.3÷0.9= 0.25×8=

九
0.04×2.5= 1×0.01= 0.1＋0.01= 0.63÷0.9=
4.5×2= 3.6÷3= 0.125×8= 0.53×1000=
72.8×0.01= 1÷125= 1.2÷0.2= 1÷0.01=
29÷100= 6.3÷0.7= 6＋2.4= 12.5×8=
8.9×0= 0.78÷3= 0.35÷0.5= 9.36÷0.9=

十
0.4×101－0.4= 1.25×0.7×0.8= 0.79+0.79×99＝
1÷5+1÷5＝ 0.89×101-0.89＝ 2－0.64－0.36﹦
1.1-2.7÷27＝ 12.4×11-12.4= 1.25×3.3×0﹦
20－3.7－7.3= 5×0.75÷1.5×0.75= 1-0.1×0.1=
6×0.125×8= 1×0.4÷1×0.4= 37.2×99＋37.2=
25×4÷0.25×4= 9÷5－4÷5﹦