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=(12+13+16)×2×3×4=37×(45-23)÷315=36÷[(56-23)×3]=18÷(14+-数学

2×24+
1
3
×24+
1
6
×24,
=12+8+4,
=24;

(10)
3
7
×(
4
5
-
2
3
)÷
3
15

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

=
2
7


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

=72;

(12)
1
8
÷(
1
4
+2.5×
4
5

=
1
8
÷[
1
4
+2],
=
1
8
×
4
9

=
1
18

据专家权威分析,试题“452÷20+109×43=101×92-92=907×99+907=274+299+201+326=6.5×99+6..”主要考查你对  整数的四则混合运算及应用题  等考点的理解。关于这些考点的“档案”如下:

整数的四则混合运算及应用题