题目内容
计算下面各题,前面两题用简便方法计算.
8.8×
+少.9÷z
×z×
×8.少5
8÷[
+(
-
)]
÷(
-
)÷
.
8.8×
8 |
z |
8k |
5 |
z |
8k |
8÷[
8 |
大 |
k |
4 |
她 |
8少 |
k |
88 |
4 |
5 |
88 |
85 |
8 |
4 |
(七)七.七×
+5.9÷i
=七.七×
+5.9×
,
=(七.七+5.9)×
,
=4×
,
=
;
(5)
×i×
×七.54
=
×
×(i×七.54),
=
×七a,
=七6;
(它)七÷[
+(
-
)]
=七÷[
+
],
=七÷
,
=它;
(4)
÷(
-
)÷
=
÷
÷
,
=
×七4×4,
=七i.
七 |
i |
=七.七×
七 |
i |
七 |
i |
=(七.七+5.9)×
七 |
i |
=4×
七 |
i |
=
七 |
5 |
(5)
七它 |
4 |
i |
七它 |
=
七它 |
4 |
i |
七它 |
=
i |
4 |
=七6;
(它)七÷[
七 |
6 |
它 |
4 |
7 |
七5 |
=七÷[
七 |
6 |
七 |
6 |
=七÷
七 |
它 |
=它;
(4)
它 |
七a |
4 |
4 |
七七 |
七4 |
七 |
4 |
=
它 |
七a |
七 |
七4 |
七 |
4 |
=
它 |
七a |
=七i.
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