Page 39 - aljaber

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◊ [AJHSME 1988] ( )

◊+ ◊ × = 36

37 ( ) 15 ( ) 13 ( ) 12 ( )

[AJHSME 1989] ( )

(1 + 11 + 21 + 31 + 41) + (9 + 19 + 29 + 39 + 49)

250 ( ) 200 ( ) 199 ( ) 150 ( )

[AJHSME 1989] ( )
)
0.909 ( ) 0.9 ( ) 0.9099 ( ) 0.99 ( ) )

−15 + 9 ×(6 ÷ 3) [AJHSME 1989] (

3 ( ) −3 ( ) −12 ( ) −48 ( )

[AJHSME 1988] (

y

15 ( ) 0 y 20 3 ()
26 ( )
12 ( ) 10 ( )
4()
(2 × 3 × 4) 1 + 1 + 1  [AJHSME 1989] ( )
3 2 3 4

9 ( ) 3 ( ) 1 ()

1− 1 [AJHSME 1989] ( )
3

1− 1
2

3( ) 2( ) 1 ()

4 3 3