问题 解答题
计算(能简算的要简算).
3
4
×
3
4
+
1
4
×0.75-75%
[1-(0.25+0.375)]÷0.25.
答案

(1)

3
4
×
3
4
+
1
4
×0.75-75%,

=

3
4
×
3
4
+
1
4
×
3
4
-
3
4

=

3
4
×(
3
4
+
1
4
-
1),

=

3
4
×0,

=0.

(2)[1-(0.25+0.375)]÷0.25.

=[1-0.625]÷0.25,

=0.375÷0.25,

=1.5.

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