小数四则运算口算（一）
1.5+0.5= 1.5-0.5= 1.5×0.5= 1.5÷0.5=
1.8+0.9= 1.8-0.9= 1.8×0.9= 1.8÷0.9=
0.25+0.25= 0.25-0.25= 0.25×0= 0.25÷0.25=
7.5+2.5= 7.5-2.5= 7.5×1= 7.5÷2.5=
10+3.2= 10-3.2= 10×3.2= 10÷0.25=
4+2.5= 4-2.5= 4×2.5= 4÷0.5=
3.2+8= 8-3.2= 3.2×8= 3.2÷8=
12.3-4.6-4.4 = 3.6÷0.25÷0.4=
小数四则运算口算（二）
0.28+0.2= 0.28-0.2= 0.28×0.2= 0.28÷0.2=
0.84+0.04= 0.84-0.04= 0.84×0.04= 0.84÷0.04=
8.1+0.9= 8.1-0.9= 8.1×0.9= 8.1÷0.9=
3.5+4.6= 6.2-3.8= 0.25×8= 0.72÷6=
6.3+0.63= 6.3-0.63= 6.3×0.1= 6.3÷0.63=
1.2+0.3= 1.2-0.3= 1.2×0.3= 1.2÷0.3=
85+0.5= 85-0.5= 3.8+15.6+6.2= 85×0.5= 3.5×2.5×0.4=
85÷0.5=
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