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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+2.5×45)=
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-
| (
| ||||||||||||||||||
| 36÷[(
|
|
▼优质解答
答案和解析
(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-
+
=12
+
,
=12
;
(9)(
+
+
)×2×3×4
=(
+
+
)×24,
=
×24+
×24+
×24,
=12+8+4,
=24;
(10)
×(
-
)÷
=
×(
×
-
×
),
=
×(
-
),
=
×
,
=
=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-
7 |
8 |
1 |
8 |
=12
1 |
8 |
1 |
8 |
=12
2 |
8 |
(9)(
1 |
2 |
1 |
3 |
1 |
6 |
=(
1 |
2 |
1 |
3 |
1 |
6 |
=
1 |
2 |
1 |
3 |
1 |
6 |
=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 |
=
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