7.09/0.52(商保留两位小数)1.36*0.27(积保留两位小数) 25.4/1.1(商用循环小数表示)用简便方法计算2.33*0.5*0.4 9.3÷0.31÷0.3 (3.2+1.2)÷0.08 3.6*2.5+7.5*3.6 9.7-22.75÷3.4 2.5*1.25*3.2

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7.09/0.52(商保留两位小数)1.36*0.27(积保留两位小数)25.4/1.1(商用循环小数表示)用简便方法计算2.33*0.5*0.49.3÷0.31÷0.3(3.2+1.2)÷0.083

7.09/0.52(商保留两位小数)1.36*0.27(积保留两位小数) 25.4/1.1(商用循环小数表示)用简便方法计算2.33*0.5*0.4 9.3÷0.31÷0.3 (3.2+1.2)÷0.08 3.6*2.5+7.5*3.6 9.7-22.75÷3.4 2.5*1.25*3.2
7.09/0.52(商保留两位小数)1.36*0.27(积保留两位小数) 25.4/1.1(商用循环小数表示)
用简便方法计算
2.33*0.5*0.4 9.3÷0.31÷0.3 (3.2+1.2)÷0.08 3.6*2.5+7.5*3.6 9.7-22.75÷3.4 2.5*1.25*3.2

7.09/0.52(商保留两位小数)1.36*0.27(积保留两位小数) 25.4/1.1(商用循环小数表示)用简便方法计算2.33*0.5*0.4 9.3÷0.31÷0.3 (3.2+1.2)÷0.08 3.6*2.5+7.5*3.6 9.7-22.75÷3.4 2.5*1.25*3.2
7.09/0.52=109/52≈2.10
1.36*0.27≈0.37
 25.4/1.1=23.
 
2.33*0.5*0.4=2.33*(0.5*0.4)=2.33*0.2=0.466
9.3÷0.31÷0.3=(9.3÷0.3)÷0.31=31÷0.31=100
(3.2+1.2)÷0.08=3.2÷0.08+1.2÷0.08=40+15=55
3.6*2.5+7.5*3.6=3.6(2.5+7.5)=3.6x10=36
9.7-22.75÷3.4=(9.7x3.4-22.75)÷3.4=10.23÷3.4≈3
2.5*1.25*3.2=2.5*3.2*1.25=8*1.25=10