问题 解答题
计算下面各题,能简算的要简算.
8
17
÷23+
1
23
×
9
17
0.25×1.25×323.6-2.8+7.4-7.2 41×101.
答案

8
17
÷23+
1
23
×
9
17

=

8
17
×
1
23
+
1
23
×
9
17

=(

8
17
+
9
17
)×
1
23

=

1
23

=

1
23

②0.25×1.25×32,

=0.25×1.25×8×4,

=(0.25×4)×(1.25×8),

=1×10,

=10;

③3.6-2.8+7.4-7.2,

=3.6+7.4-(2.8+7.2),

=11-10,

=1;

④41×101,

=41×(100+1),

=41×100+41×1,

=4100+41,

=4141.

填空题
多项选择题