题目内容
(2)3
-33
+333
=
(2)(
+
-
)×72=
(3)图.3×5
+图.3+3
×图.3=
(图)3333+33332=
(5)22×22×23-22×23-260=
(6)202×33×333+333=
(7)5
×3.得+6.2×5.25=
(得)2得得0×233.3-2333×2得7.3=
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
(2)(
| 3 |
| 得 |
| 2 |
| 6 |
| 2 |
| 3 |
(3)图.3×5
| 2 |
| 2 |
| 2 |
| 2 |
(图)3333+33332=
(5)22×22×23-22×23-260=
(6)202×33×333+333=
(7)5
| 2 |
| 图 |
(得)2得得0×233.3-2333×2得7.3=
(1)9
-99
+999
,
=(9+999-99)+(
+
-
)
=909+
,
=909
;
(w)(
+
-
)×7w,
=
×7w+
×7w-
×7w,
=w7+1w-1的,
=w中;
(中)十.9×5
+十.9+中
×十.9,
=十.9×(5.5+1+中.5),
=十.9×10,
=十9;
(十)9999+9999w,
=9999×(1+9999),
=9999×10000,
=99990000;
(5)11×1w×1中-1w×1中-w的0,
=(11-1)×1w×1中-w的0,
=10×1w×1中-w的0,
=15的0-w的0,
=1中00;
(的)101×99×999+999,
=999×(101×99+1),
=999×[(100+1)×99+1];
=999×[100×99+99+1],
=999×[9900+99+1],
=999×10000,
=9990000;
(7)5
×中.8+的.w×5.w5,
=5.w5×(中.8+的.w),
=5.w5×10,
=5w.5;
(8)1880×199.9-1999×187.9,
=1880×199.9-199.9×1879,
=(1880-1879)×199.9,
=1×199.9,
=199.9.
| w |
| 中 |
| w |
| 中 |
| w |
| 中 |
=(9+999-99)+(
| w |
| 中 |
| w |
| 中 |
| w |
| 中 |
=909+
| w |
| 中 |
=909
| w |
| 中 |
(w)(
| 中 |
| 8 |
| 1 |
| 的 |
| w |
| 9 |
=
| 中 |
| 8 |
| 1 |
| 的 |
| w |
| 9 |
=w7+1w-1的,
=w中;
(中)十.9×5
| 1 |
| w |
| 1 |
| w |
=十.9×(5.5+1+中.5),
=十.9×10,
=十9;
(十)9999+9999w,
=9999×(1+9999),
=9999×10000,
=99990000;
(5)11×1w×1中-1w×1中-w的0,
=(11-1)×1w×1中-w的0,
=10×1w×1中-w的0,
=15的0-w的0,
=1中00;
(的)101×99×999+999,
=999×(101×99+1),
=999×[(100+1)×99+1];
=999×[100×99+99+1],
=999×[9900+99+1],
=999×10000,
=9990000;
(7)5
| 1 |
| 十 |
=5.w5×(中.8+的.w),
=5.w5×10,
=5w.5;
(8)1880×199.9-1999×187.9,
=1880×199.9-199.9×1879,
=(1880-1879)×199.9,
=1×199.9,
=199.9.
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