18
30+54874246+5460+3930684
7829+307+7+7366909028+12
3244935+45201845+55497+500
10
1 ( ) ( )
26 4 ( )10 ( )
3 2300 ( )( )
4 1803 ( ) ( )
( )
5 799999081000089579889
( )>( )>( )>( )>( )
6 20202 2 2 2 2 , 2 2
74 k m = ( ) m 2000 m = ( ) k m 500 c m = ( ) m
8 60 5 5000
8 18 20
92213 + + +
10 7
x 10
1
2
3 504
4 9 1
51000 100 10
6 4907 9470
7 1 1
8
9
10
6
4cm=( )mm 9692-17 999m1km
40dm=( )cm 24052400+5 40+10001400
