试题:
口算.
1.05×0.2=
6.4÷0.8=2.4×5=0.7×11=
7.3×0.1=36÷0.1=1÷7=1.69-0.9=

答案:

我来补答
1.05×0.2=0.21; 6.4÷0.8=8; 2.4×5=12; 0.7×11=7.7;
7.3×0.1=0.73; 36÷0.1=360; 1÷7=
1
7
; 1.69-0.9=0.79.
 
 
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