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一、口算。
$0.96÷0.8=$
$0.65÷0.13=$
$0.5×0.4=$
$2.5×0.6=$
$2.19+9.1=$
$10.1×0.3=$
$1.34-0.4=$
$3.5×0.2=$
$0.96÷0.8=$
1.2
$3.4×4=$13.6
$15+1.5=$16.5
$0.65÷0.13=$
5
$3÷0.4=$7.5
$0.186-0.06=$0.126
$0.5×0.4=$
0.2
$7.82÷0.2=$39.1
$0.8÷0.25=$3.2
$2.5×0.6=$
1.5
$0.36×200=$72
$0.07÷0.35=$0.2
$2.19+9.1=$
11.29
$0.81÷2.7=$0.3
$3.6+6.34=$9.94
$10.1×0.3=$
3.03
$8.5÷1.7=$5
$0.081×10=$0.81
$1.34-0.4=$
0.94
$75÷2.5=$30
$7÷0.2=$35
$3.5×0.2=$
0.7
$1.25÷0.25=$5
$6-0.025=$5.975
答案
1.2 13.6 16.5 5 7.5 0.126 0.2 39.1 3.2 1.5 72 0.2 11.29 0.3 9.94 3.03 5 0.81 0.94 30 35 0.7 5 5.975
二、计算下面各题。
$(9.79+7.49)÷4.8$ $23.8+0.728÷13$ $4.5×1.4+8.64÷2.7$
$6.5×2.6-0.25$ $5.5-4.37÷2.3$ $7.05÷(0.47×20)+3.62$
$(9.79+7.49)÷4.8$ $23.8+0.728÷13$ $4.5×1.4+8.64÷2.7$
$6.5×2.6-0.25$ $5.5-4.37÷2.3$ $7.05÷(0.47×20)+3.62$
答案
3.6 23.856 9.5 16.65 3.6 4.37
解析
$(9.79+7.49)÷4.8=17.28÷4.8=3.6$
$23.8+0.728÷13=23.8+0.056=23.856$
$4.5×1.4+8.64÷2.7=6.3+3.2=9.5$
$6.5×2.6-0.25=16.9-0.25=16.65$
$5.5-4.37÷2.3=5.5-1.9=3.6$
$7.05÷(0.47×20)+3.62=7.05÷9.4+3.62=0.75+3.62=4.37$
$23.8+0.728÷13=23.8+0.056=23.856$
$4.5×1.4+8.64÷2.7=6.3+3.2=9.5$
$6.5×2.6-0.25=16.9-0.25=16.65$
$5.5-4.37÷2.3=5.5-1.9=3.6$
$7.05÷(0.47×20)+3.62=7.05÷9.4+3.62=0.75+3.62=4.37$
