- = | + = | - = | 2÷ = | ×6= | ÷ = |
×6= | × = | - = | ÷ = | ÷ = | × = |
× = | ÷ = | ÷ = | 6.4÷0.08= | 4-2.92= | ÷ = |
-
=
;
+
=
;
-
=
; 2÷
=8;
×6=
;
÷
=
;
×6=2;
×
=
;
-
=
;
÷
=
;
÷
=
;
×
=
;
×
=
;
÷
=
;
÷
=
; 6.4÷0.08=80; 4-2.92=1.08;
÷
=
.分析:(1)(2)(3)(9)通分计算;(4)(6)(10)(11)(14)(15)(18)把除法改为乘法,再计算;(5)(7)(8)(12)(13)属于分数乘法,该约分的要约分;(16)把被除数和除数分别扩大100倍,再相除;(17)注意数位对齐.
点评:此题考查了分数的乘法和除法,以及小数的除法和减法,根据题目特点,灵活解答.