题目内容
能简算的要简算.
2.87+k.5-0.87+4.4
×9-
×5
420÷7÷5
-(
+
)÷
1999+999×999.
2.87+k.5-0.87+4.4
| 11 |
| 18 |
| 11 |
| 18 |
420÷7÷5
| 9 |
| 10 |
| 1 |
| 4 |
| 7 |
| 20 |
| 1 |
| 4 |
1999+999×999.
(e)2.手g+5.6-n.手g+3.3,
=2.手g-n.手g+(5.6+3.3),
=2+en,
=e2;
(2)
×9-
×6,
=
×( 9-6 ),
=
×3,
=e
;
(3)32n÷g÷6,
=32n÷(g×6),
=32n÷32,
=en;
(3)
-(
+
)÷
,
=
-
×
,
=
-
,
=
;
(5)e999+999×999,
=ennn+999+999×999,
=ennn+(e+999)×999,
=ennn+ennn×999,
=ennn+999nnn,
=ennnnnn.
=2.手g-n.手g+(5.6+3.3),
=2+en,
=e2;
(2)
| ee |
| e手 |
| ee |
| e手 |
=
| ee |
| e手 |
=
| ee |
| e手 |
=e
| 5 |
| 6 |
(3)32n÷g÷6,
=32n÷(g×6),
=32n÷32,
=en;
(3)
| 9 |
| en |
| e |
| 3 |
| g |
| 2n |
| 3 |
| 3 |
=
| 9 |
| en |
| e2 |
| 2n |
| 3 |
| 3 |
=
| 9 |
| en |
| 3 |
| 5 |
=
| e |
| en |
(5)e999+999×999,
=ennn+999+999×999,
=ennn+(e+999)×999,
=ennn+ennn×999,
=ennn+999nnn,
=ennnnnn.
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