452÷20+109×43=101×92-92=907×99+907=274+299+201+326=6.5×99+6.5=31.25÷25×0.5=3.8×4.2+38×0.58=13-78+18=

题目简介

452÷20+109×43=101×92-92=907×99+907=274+299+201+326=6.5×99+6.5=31.25÷25×0.5=3.8×4.2+38×0.58=13-78+18=

题目详情

452÷20+109×43=101×92-92=907×99+907=
274+299+201+326=6.5×99+6.5=31.25÷25×0.5=
3.8×4.2+38×0.58=13-
7
8
+
1
8
=
1
2
+
1
3
+
1
6
)×2×3×4=
3
7
×(
4
5
-
2
3
)÷
3
15
=
36÷[(
5
6
-
2
3
)×3]=
1
8
÷(
1
4
+2.5×
4
5
)=
题型:解答题难度:中档来源:不详

答案

(1)452÷20+109×43
=22.6+4687,
=4709.6;

(2)101×92-92,
=(101-1)×92,
=100×92,
=9200;

(3)907×99+907,
=(99+1)×907,
=100×907,
=90700;

(4)274+299+201+326,
=(274+326)+(299+201),
=600+500,
=1100;

(5)6.5×99+6.5,
=(99+1)×6.5,
=100×6.5,
=650;

(6)31.25÷25×0.5,
=1.25÷0.5,
=2.5;

(7)3.8×4.2+38×0.58
=38×0.42+38×0.58
=(0.42+0.58)×38,
=1×0.38,
=38;

(8)13-class="stub"7
8
+class="stub"1
8

=12class="stub"1
8
+class="stub"1
8

=12class="stub"2
8


(9)(class="stub"1
2
+class="stub"1
3
+class="stub"1
6
)×2×3×4
=(class="stub"1
2
+class="stub"1
3
+class="stub"1
6
)×24,
=class="stub"1
2
×24+class="stub"1
3
×24+class="stub"1
6
×24,
=12+8+4,
=24;

(10)class="stub"3
7
×(class="stub"4
5
-class="stub"2
3
)÷class="stub"3
15

=class="stub"3
7
×(class="stub"4
5
×class="stub"15
3
-class="stub"2
3
×class="stub"15
3
),
=class="stub"3
7
×(class="stub"12
3
-class="stub"10
3
),
=class="stub"3
7
×class="stub"2
3

=class="stub"2
7


(11)36÷[(class="stub"5
6
-class="stub"2
3
)×3]
=36÷[class="stub"1
6
×3],
=36÷class="stub"1
2

=72;

(12)class="stub"1
8
÷(class="stub"1
4
+2.5×class="stub"4
5

=class="stub"1
8
÷[class="stub"1
4
+2],
=class="stub"1
8
×class="stub"4
9

=class="stub"1
18

更多内容推荐