Page 78 - aljaber

@ @VU@ @†a‡Èÿa@ @

0.9 ( ) 0.9 ( ) )

7 × 0.53 0.7 × 5.3
0.12345
[AJHSME 1990] (

9

4 ( ) 3 ( ) 2 ( ) 1 ()
[AJHSME 1990] ( )

(0.48017)3

11.0 ( ) 1.10 ( ) 0.110 ( ) 0.011 ( )

[AJHSME 1990] ( )
)
: 1990 − 1980 + 1970 − 1960 + − 20 + 10

1000 ( ) 990 ( ) −10 ( ) −990 ( )

1000 000 000 000 − 777 777 777 777 [AJHSME 1991] (

222222 222 223 ( ) 222222 222 222 ( )
322 222 222223 ( ) 233 333 333 333 ( )

[AJHSME 1991] ( )

: (487000)(12027300) + (9621001)(487000)

(19367)(0.05)

100 000 000 ( ) 10000000 ( )

10 000 000 000 ( ) 1000 000 000 ( )

2 + 3 + 4 = 1990 + 1991 + 1992 [AJHSME 1991] ( )
3N