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2998 ( ) 9289 ( ) 2990 ( ) 19.89 ( )

8 × 0.25 ×2 × 0.125 [AJHSME 1988] ( )

2() 1( ) 1( ) 1 ()
0.6 ( )
2 4 8

1+2+3 [AJHSME 1988] ( )
10 20 30

0.3 ( ) 0.2 ( ) 0.1 ( )

(0.2)3 [AJHSME 1988] ( )
(0.02)2 )
20 ( ) 2( ) 0.2 ( ) )
10 ( )
)
2.46 × 8.163 ×(5.17 + 4.829) [AJHSME 1988] (

400 ( ) 300 ( ) 200 ( ) 100 ( )

 1 + 1  [AJHSME 1988] (
2 3

5 () 6( ) 2( ) 1 ()

2 5 5 6

0.246 ( ) 2+ 4 + 6 [AJHSME 1989] (
10 100 1000

0.12 ( ) 0.0246 ( ) 0.012 ( )

401 [AJHSME 1989] ( )

0.205 20 ( ) 2( ) 0.2 ( )

2000 ( )

9 [AJHSME 1989] ( )
5 × 53 0.9 ( )

0.9 ( ) 0.7 × 53

0.7 × 0.53