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计算题256-198=3.5×35=1617÷8=3.14+2.9=23÷12=0.5+134=15-16+45=0.25×(215×4)=

题目详情
计算题
256-198=3.5×
3
5
=
16
17
÷8=
3.14+2.9=
2
3
÷
1
2
=
0.5+1
3
4
=
1
5
-
1
6
+
4
5
=
0.25×(
2
15
×4)=
▼优质解答
答案和解析
(1)256-198
=256-200+2
=58;

(2)3.5×
3
5
=2.1;

(3)
16
17
÷8
=
16
17
×
1
8

=
2
17


(4)3.14+2.9=6.04;

(5)
2
3
÷
1
2

=
2
3
×2
=
4
3


(6)0.5+1
3
4

=0.5+0.75
=1.25;

(7)
1
5
-
1
6
+
4
5

=
1
5
+
4
5
+
1
6

=1+
1
6

=1
1
6


(8)0.25×(
2
15
×4)
=0.25×4×
2
15

=1×
2
15

=
2
15