题目内容
| 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÷[(
|
|
(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)
×(
-
)÷
=
×(
×
-
×
),
=
×(
-
),
=
×
,
=
;
(11)36÷[(
-
)×3]
=36÷[
×3],
=36÷
,
=72;
(12)
÷(
+2.5×
)
=
÷[
+2],
=
×
,
=
.
=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 |
=
| 2 |
| 7 |
(11)36÷[(
| 5 |
| 6 |
| 2 |
| 3 |
=36÷[
| 1 |
| 6 |
=36÷
| 1 |
| 2 |
=72;
(12)
| 1 |
| 8 |
| 1 |
| 4 |
| 4 |
| 5 |
=
| 1 |
| 8 |
| 1 |
| 4 |
=
| 1 |
| 8 |
| 4 |
| 9 |
=
| 1 |
| 18 |
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