问题
解答题
口算我最行.
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答案
0.25×2=0.5; 89.3×0.6=53.58; 5÷0.25=20; 6.5×6.7+3.5×6.7=67;
9.6÷32=0.3; 65÷1.3=50; 0.28÷4=0.07; 50×7.89×0.2=78.9;
1÷4=0.25; 28÷0.02=1400; 28÷0.5=56; 0.4×3.2×2.5=3.2;
故答案为:0.5,53.58,20,67,0.3,50,0.07,78.9,0.25,1400,56,3.2.