在( )里填上合适的数。
( ) + 5 = 12( ) + 7 = 17( ) - 4 = 109 + ( ) = 1513 - ( ) = 10( ) + 12 = 1217 - ( ) = 10( ) + 5 = 183 + ( ) = 17( ) + 9 = 20( ) + 5 = 134 + ( ) = 2019 - ( ) = 4( ) + 9 = 1918 - ( ) = 1117 - ( ) = 10
11 + ( ) = 19( ) - 2 = 18( ) + 2 = 113 + ( ) = 11( ) + 6 = 1113 + ( ) = 1614 + ( ) = 182 + ( ) = 10( ) + 6 = 1013 + ( ) = 1619 - ( ) = 519 - ( ) = 14( ) - 15 = 220 - ( ) = 417 - ( ) = 10( ) - 8 = 11
20 - ( ) = 159 + ( ) = 17( ) - 5 = 9( ) + 8 = 1410 + ( ) = 1618 - ( ) = 9( ) + 8 = 124 + ( ) = 8( ) + 3 = 914 - ( ) = 10( ) + 2 = 16( ) - 5 = 139 + ( ) = 1719 - ( ) = 3( ) + 6 = 1510 + ( ) = 17
5 + ( ) = 14( ) - 12 = 312 - ( ) = 317 - ( ) = 810 + ( ) = 2019 - ( ) = 7( ) + 7 = 1517 - ( ) = 77 + ( ) = 155 + ( ) = 14( ) - 12 = 35 + ( ) = 10( ) + 1 = 2012 + ( ) = 1818 - ( ) = 415 + ( ) = 1715 - ( ) = 10
11 + ( ) = 5( ) - 8 = 817 - ( ) = 914 - ( ) = 6( ) + 11 = 15( ) - 7 = 11( ) + 5 = 1214 + ( ) = 1812 - ( ) = 912 - ( ) = 511 - ( ) = 716 - ( ) = 013 + ( ) = 166 + ( ) = 12( ) - 5 = 1017 - ( ) = 1711 - ( ) = 5
17 - ( ) = 10( ) + 5 = 18( ) - 6 = 715 - ( ) = 9( ) - 8 = 89 + ( ) = 18( ) + 7 = 1015 - ( ) = 11( ) + 2 = 14( ) - 15 = 5( ) - 6 = 13( ) - 6 = 1213 - ( ) = 1418 - ( ) = 9( ) + 8 = 1215 - ( ) = 713 - ( ) = 8
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