一年级20以内加减法口算题

班别：________ 姓名：________ 学号：________ 成绩:________ ( ) + 8 = 10( ) + 1 = 1( ) + 13 = 19( ) + 2 = 2 ( ) + 2 = 13( ) + 6 = 7( ) + 1 = 5( ) + 1 = 5 5 - ( ) = 5 4 - ( ) = 418 - ( ) = 10 2 - ( ) = 1 ( ) - 12 = 4( ) - 14 = 120 - ( ) = 5( ) - 13 = 6 1 - ( ) = 08 - ( ) = 28 - ( ) = 00 - ( ) = 0 ( ) + 5 = 6( ) + 3 = 13( ) + 18 = 20( ) + 1 = 4 ( ) - 11 = 1( ) - 15 = 4( ) - 19 = 1( ) - 9 = 5 3 + ( ) = 68 + ( ) = 19 2 + ( ) = 7 2 + ( ) = 6 ( ) + 6 = 12( ) + 9 = 9( ) + 2 = 2( ) + 1 = 1 ( ) - 13 = 5( ) - 1 = 4( ) - 5 = 1( ) - 6 = 12 4 + ( ) = 9 1 + ( ) = 10 6 + ( ) = 10 6 + ( ) = 15 ( ) + 8 = 12( ) + 12 = 16( ) + 3 = 9( ) + 7 = 12 12 - ( ) = 1015 - ( ) = 316 - ( ) = 16 3 - ( ) = 3 ( ) + 9 = 16( ) + 16 = 20( ) + 4 = 7( ) + 3 = 6 ( ) - 14 = 4( ) - 17 = 3( ) - 9 = 7( ) - 1 = 11 1 + ( ) = 5 2 + ( ) = 15 2 + ( ) = 2 5 + ( ) = 6 11 - ( ) = 1113 - ( ) = 111 - ( ) = 7 4 - ( ) = 1 ( ) + 4 = 16( ) + 6 = 10( ) + 10 = 12( ) + 9 = 17 ( ) - 7 = 10( ) - 18 = 2( ) - 3 = 17( ) - 7 = 4 12 + ( ) = 147 + ( ) = 815 + ( ) = 1711 + ( ) = 18 2 - ( ) = 115 - ( ) = 8 1 - ( ) = 0 1 - ( ) = 1 2 - ( ) = 214 - ( ) = 715 - ( ) = 78 - ( ) = 2 ( ) - 4 = 3( ) - 7 = 13( ) - 9 = 4( ) - 16 = 4 1 + ( ) = 5 5 + ( ) = 9 1 + ( ) = 2 4 + ( ) = 9 1 + ( ) = 14 1 + ( ) = 2 4 + ( ) = 12 1 + ( ) = 2

班别：________ 姓名：________ 学号：________ 成绩:________ ( ) + 2 = 11( ) + 1 = 2( ) + 3 = 5( ) + 1 = 8 ( ) + 8 = 8( ) + 4 = 5( ) + 8 = 19( ) + 10 = 12 20 - ( ) = 1311 - ( ) = 412 - ( ) = 1 4 - ( ) = 2 ( ) - 7 = 1( ) - 7 = 3 1 - ( ) = 0( ) - 16 = 2 12 - ( ) = 513 - ( ) = 817 - ( ) = 137 - ( ) = 3 ( ) + 4 = 15( ) + 5 = 13( ) + 9 = 15( ) + 3 = 5 ( ) - 19 = 1( ) - 7 = 7( ) - 18 = 1( ) - 16 = 4 2 + ( ) = 5 3 + ( ) = 7 1 + ( ) = 3 5 + ( ) = 6 ( ) + 14 = 15( ) + 2 = 15( ) + 15 = 15( ) + 1 = 2 ( ) - 4 = 13( ) - 10 = 1( ) - 7 = 6( ) - 10 = 10 1 + ( ) = 1710 + ( ) = 20 4 + ( ) = 5 5 + ( ) = 11 ( ) + 2 = 10( ) + 5 = 6( ) + 4 = 7( ) + 9 = 12 11 - ( ) = 4 4 - ( ) = 4 2 - ( ) = 116 - ( ) = 6 ( ) + 4 = 10( ) + 6 = 20( ) + 10 = 17( ) + 12 = 16 ( ) - 12 = 3( ) - 15 = 3( ) - 14 = 4( ) - 1 = 8 8 + ( ) = 8 1 + ( ) = 510 + ( ) = 10 5 + ( ) = 20 14 - ( ) = 6 4 - ( ) = 018 - ( ) = 713 - ( ) = 7 ( ) + 13 = 14( ) + 5 = 6( ) + 1 = 8( ) + 14 = 17 ( ) - 1 = 8( ) - 7 = 6( ) - 8 = 8( ) - 14 = 5 7 + ( ) = 10 1 + ( ) = 15 1 + ( ) = 5 1 + ( ) = 2 0 - ( ) = 015 - ( ) = 8 2 - ( ) = 00 - ( ) = 0 8 - ( ) = 015 - ( ) = 15 3 - ( ) = 315 - ( ) = 15 ( ) - 11 = 8( ) - 10 = 7( ) - 2 = 18( ) - 16 = 3 5 + ( ) = 1613 + ( ) = 13 1 + ( ) = 16 3 + ( ) = 7 10 + ( ) = 1111 + ( ) = 13 1 + ( ) = 129 + ( ) = 11

班别：________ 姓名：________ 学号：________ 成绩:________ ( ) + 1 = 10( ) + 2 = 8( ) + 11 = 12( ) + 4 = 15 ( ) + 7 = 10( ) + 3 = 3( ) + 10 = 11( ) + 1 = 1 1 - ( ) = 119 - ( ) = 11 4 - ( ) = 019 - ( ) = 12 ( ) - 1 = 5( ) - 3 = 11 3 - ( ) = 1( ) - 19 = 1 18 - ( ) = 7 6 - ( ) = 2 1 - ( ) = 0 6 - ( ) = 4 ( ) + 3 = 17( ) + 3 = 11( ) + 2 = 6( ) + 1 = 11 ( ) - 12 = 8( ) - 11 = 6( ) - 9 = 8( ) - 2 = 17 8 + ( ) = 1916 + ( ) = 18 5 + ( ) = 98 + ( ) = 15 ( ) + 5 = 5( ) + 1 = 2( ) + 3 = 5( ) + 2 = 2 ( ) - 11 = 8( ) - 1 = 13( ) - 7 = 4( ) - 9 = 8 2 + ( ) = 1110 + ( ) = 10 4 + ( ) = 14 3 + ( ) = 15 ( ) + 1 = 10( ) + 3 = 18( ) + 5 = 16( ) + 2 = 15 3 - ( ) = 212 - ( ) = 419 - ( ) = 1 2 - ( ) = 2 ( ) + 2 = 14( ) + 1 = 2( ) + 2 = 2( ) + 6 = 8 ( ) - 12 = 8( ) - 11 = 9( ) - 16 = 3( ) - 5 = 1 13 + ( ) = 187 + ( ) = 12 5 + ( ) = 6 2 + ( ) = 9 1 - ( ) = 1 1 - ( ) = 013 - ( ) = 315 - ( ) = 10 ( ) + 11 = 13( ) + 3 = 4( ) + 2 = 8( ) + 2 = 10 ( ) - 9 = 1( ) - 10 = 1( ) - 10 = 5( ) - 14 = 6 1 + ( ) = 1611 + ( ) = 2010 + ( ) = 19 6 + ( ) = 11 11 - ( ) = 1017 - ( ) = 79 - ( ) = 80 - ( ) = 0 14 - ( ) = 107 - ( ) = 78 - ( ) = 316 - ( ) = 12 ( ) - 1 = 14( ) - 2 = 18( ) - 16 = 4( ) - 16 = 2 2 + ( ) = 38 + ( ) = 12 3 + ( ) = 12 1 + ( ) = 1 17 + ( ) = 2014 + ( ) = 198 + ( ) = 89 + ( ) = 14

班别：________ 姓名：________ 学号：________ 成绩:________ ( ) + 8 = 16( ) + 4 = 9( ) + 5 = 14( ) + 5 = 17 ( ) + 2 = 20( ) + 10 = 10( ) + 3 = 13( ) + 1 = 1 17 - ( ) = 1420 - ( ) = 1613 - ( ) = 87 - ( ) = 1 ( ) - 6 = 3( ) - 17 = 1 5 - ( ) = 4( ) - 19 = 1 19 - ( ) = 8 1 - ( ) = 010 - ( ) = 518 - ( ) = 1 ( ) + 2 = 6( ) + 4 = 11( ) + 4 = 11( ) + 8 = 19 ( ) - 16 = 1( ) - 15 = 3( ) - 1 = 7( ) - 12 = 2 2 + ( ) = 5 2 + ( ) = 1310 + ( ) = 13 4 + ( ) = 7 ( ) + 8 = 11( ) + 4 = 9( ) + 1 = 1( ) + 5 = 17 ( ) - 6 = 4( ) - 17 = 3( ) - 19 = 1( ) - 10 = 2 4 + ( ) = 613 + ( ) = 19 2 + ( ) = 9 2 + ( ) = 2 ( ) + 9 = 15( ) + 4 = 4( ) + 3 = 17( ) + 3 = 15 20 - ( ) = 1219 - ( ) = 7 2 - ( ) = 020 - ( ) = 13 ( ) + 1 = 4( ) + 11 = 12( ) + 4 = 7( ) + 7 = 13 ( ) - 16 = 1( ) - 4 = 4( ) - 7 = 4( ) - 16 = 4 10 + ( ) = 1813 + ( ) = 188 + ( ) = 12 4 + ( ) = 6 5 - ( ) = 57 - ( ) = 717 - ( ) = 10 4 - ( ) = 3 ( ) + 1 = 19( ) + 2 = 3( ) + 1 = 1( ) + 1 = 1 ( ) - 12 = 5( ) - 12 = 3( ) - 2 = 10( ) - 12 = 1 1 + ( ) = 2 1 + ( ) = 29 + ( ) = 10 5 + ( ) = 7 8 - ( ) = 1 3 - ( ) = 019 - ( ) = 12 4 - ( ) = 4 7 - ( ) = 014 - ( ) = 819 - ( ) = 810 - ( ) = 5 ( ) - 16 = 2( ) - 17 = 3( ) - 6 = 5( ) - 5 = 5 3 + ( ) = 7 6 + ( ) = 713 + ( ) = 1712 + ( ) = 13 2 + ( ) = 3 5 + ( ) = 1015 + ( ) = 1819 + ( ) = 20

班别：________ 姓名：________ 学号：________ 成绩:________ ( ) + 2 = 3( ) + 6 = 7( ) + 1 = 1( ) + 5 = 16 ( ) + 6 = 7( ) + 2 = 20( ) + 4 = 18( ) + 12 = 12 4 - ( ) = 214 - ( ) = 1414 - ( ) = 311 - ( ) = 2 ( ) - 10 = 5( ) - 19 = 1 4 - ( ) = 2( ) - 15 = 5 2 - ( ) = 218 - ( ) = 1013 - ( ) = 520 - ( ) = 0 ( ) + 1 = 5( ) + 17 = 17( ) + 10 = 13( ) + 1 = 3 ( ) - 15 = 3( ) - 8 = 7( ) - 7 = 9( ) - 8 = 4 9 + ( ) = 15 2 + ( ) = 7 2 + ( ) = 2 1 + ( ) = 3 ( ) + 13 = 16( ) + 16 = 17( ) + 5 = 15( ) + 9 = 13 ( ) - 7 = 2( ) - 1 = 8( ) - 17 = 2( ) - 6 = 9 1 + ( ) = 111 + ( ) = 16 5 + ( ) = 5 6 + ( ) = 17 ( ) + 18 = 19( ) + 2 = 5( ) + 5 = 10( ) + 1 = 9 17 - ( ) = 813 - ( ) = 17 - ( ) = 1 6 - ( ) = 5 ( ) + 7 = 13( ) + 11 = 19( ) + 3 = 3( ) + 1 = 1 ( ) - 17 = 3( ) - 12 = 1( ) - 7 = 5( ) - 5 = 3 6 + ( ) = 197 + ( ) = 8 1 + ( ) = 213 + ( ) = 19 6 - ( ) = 211 - ( ) = 18 - ( ) = 3 5 - ( ) = 0 ( ) + 11 = 11( ) + 11 = 11( ) + 1 = 7( ) + 2 = 9 ( ) - 3 = 6( ) - 8 = 6( ) - 8 = 9( ) - 19 = 1 8 + ( ) = 97 + ( ) = 14 3 + ( ) = 15 1 + ( ) = 2 14 - ( ) = 2 5 - ( ) = 115 - ( ) = 68 - ( ) = 4 5 - ( ) = 47 - ( ) = 1 3 - ( ) = 27 - ( ) = 1 ( ) - 13 = 4( ) - 19 = 1( ) - 4 = 8( ) - 6 = 10 2 + ( ) = 27 + ( ) = 17 4 + ( ) = 1511 + ( ) = 11 2 + ( ) = 8 1 + ( ) = 12 4 + ( ) = 11 6 + ( ) = 8

班别：________ 姓名：________ 学号：________ 成绩:________ ( ) + 6 = 6( ) + 2 = 4( ) + 3 = 7( ) + 6 = 14 ( ) + 2 = 17( ) + 2 = 4( ) + 1 = 11( ) + 4 = 6 17 - ( ) = 019 - ( ) = 87 - ( ) = 014 - ( ) = 4 ( ) - 3 = 2( ) - 4 = 15 4 - ( ) = 2( ) - 18 = 2 17 - ( ) = 615 - ( ) = 60 - ( ) = 00 - ( ) = 0 ( ) + 4 = 6( ) + 13 = 13( ) + 3 = 3( ) + 6 = 6 ( ) - 1 = 9( ) - 9 = 10( ) - 3 = 7( ) - 10 = 7 5 + ( ) = 14 3 + ( ) = 3 4 + ( ) = 512 + ( ) = 14 ( ) + 1 = 5( ) + 13 = 20( ) + 2 = 10( ) + 6 = 11 ( ) - 1 = 11( ) - 14 = 6( ) - 19 = 1( ) - 13 = 7 13 + ( ) = 137 + ( ) = 198 + ( ) = 13 5 + ( ) = 5 ( ) + 15 = 16( ) + 10 = 17( ) + 3 = 3( ) + 2 = 13 0 - ( ) = 08 - ( ) = 012 - ( ) = 311 - ( ) = 1 ( ) + 1 = 1( ) + 7 = 7( ) + 1 = 3( ) + 5 = 13 ( ) - 7 = 3( ) - 14 = 3( ) - 1 = 11( ) - 9 = 11 2 + ( ) = 2 3 + ( ) = 38 + ( ) = 20 1 + ( ) = 17 19 - ( ) = 29 - ( ) = 814 - ( ) = 610 - ( ) = 8 ( ) + 5 = 13( ) + 6 = 20( ) + 9 = 17( ) + 1 = 1 ( ) - 18 = 2( ) - 6 = 13( ) - 14 = 2( ) - 5 = 1 12 + ( ) = 12 3 + ( ) = 1510 + ( ) = 1315 + ( ) = 17 14 - ( ) = 0 5 - ( ) = 17 - ( ) = 220 - ( ) = 9 19 - ( ) = 79 - ( ) = 713 - ( ) = 114 - ( ) = 2 ( ) - 14 = 2( ) - 3 = 1( ) - 8 = 11( ) - 6 = 1 3 + ( ) = 511 + ( ) = 16 3 + ( ) = 18 2 + ( ) = 16 3 + ( ) = 20 4 + ( ) = 811 + ( ) = 13 6 + ( ) = 15

班别：________ 姓名：________ 学号：________ 成绩:________ ( ) + 13 = 13( ) + 15 = 19( ) + 9 = 14( ) + 1 = 2 ( ) + 4 = 6( ) + 6 = 9( ) + 3 = 11( ) + 4 = 14 19 - ( ) = 14 4 - ( ) = 020 - ( ) = 3 5 - ( ) = 0 ( ) - 18 = 1( ) - 5 = 119 - ( ) = 6( ) - 19 = 1 16 - ( ) = 09 - ( ) = 3 2 - ( ) = 1 1 - ( ) = 0 ( ) + 6 = 10( ) + 1 = 7( ) + 6 = 20( ) + 5 = 17 ( ) - 5 = 3( ) - 7 = 13( ) - 8 = 5( ) - 11 = 1 10 + ( ) = 13 3 + ( ) = 68 + ( ) = 10 1 + ( ) = 1 ( ) + 1 = 2( ) + 11 = 12( ) + 10 = 15( ) + 15 = 19 ( ) - 14 = 3( ) - 4 = 16( ) - 3 = 17( ) - 9 = 5 7 + ( ) = 8 6 + ( ) = 1610 + ( ) = 20 2 + ( ) = 17 ( ) + 3 = 10( ) + 8 = 18( ) + 10 = 10( ) + 3 = 18 13 - ( ) = 814 - ( ) = 216 - ( ) = 1420 - ( ) = 4 ( ) + 2 = 13( ) + 4 = 8( ) + 13 = 13( ) + 11 = 16 ( ) - 19 = 1( ) - 8 = 1( ) - 9 = 8( ) - 7 = 1 3 + ( ) = 57 + ( ) = 710 + ( ) = 12 1 + ( ) = 1 2 - ( ) = 1 2 - ( ) = 011 - ( ) = 316 - ( ) = 13 ( ) + 2 = 11( ) + 13 = 13( ) + 9 = 19( ) + 2 = 3 ( ) - 17 = 3( ) - 7 = 5( ) - 19 = 1( ) - 12 = 3 8 + ( ) = 11 6 + ( ) = 1212 + ( ) = 16 2 + ( ) = 18 19 - ( ) = 107 - ( ) = 013 - ( ) = 219 - ( ) = 8 1 - ( ) = 113 - ( ) = 720 - ( ) = 1 5 - ( ) = 2 ( ) - 7 = 10( ) - 8 = 12( ) - 14 = 2( ) - 6 = 8 6 + ( ) = 1713 + ( ) = 1512 + ( ) = 13 5 + ( ) = 10 2 + ( ) = 2 6 + ( ) = 10 1 + ( ) = 1 5 + ( ) = 18

班别：________ 姓名：________ 学号：________ 成绩:________ ( ) + 4 = 16( ) + 8 = 10( ) + 6 = 18( ) + 8 = 10 ( ) + 1 = 1( ) + 19 = 20( ) + 4 = 12( ) + 1 = 6 11 - ( ) = 60 - ( ) = 019 - ( ) = 415 - ( ) = 4 ( ) - 14 = 2( ) - 17 = 113 - ( ) = 11( ) - 8 = 9 11 - ( ) = 815 - ( ) = 6 3 - ( ) = 216 - ( ) = 0 ( ) + 1 = 15( ) + 18 = 20( ) + 10 = 17( ) + 18 = 18 ( ) - 12 = 2( ) - 12 = 4( ) - 14 = 1( ) - 10 = 7 5 + ( ) = 8 3 + ( ) = 7 3 + ( ) = 510 + ( ) = 17 ( ) + 11 = 11( ) + 14 = 15( ) + 5 = 9( ) + 1 = 1 ( ) - 5 = 8( ) - 12 = 3( ) - 13 = 7( ) - 3 = 8 5 + ( ) = 97 + ( ) = 914 + ( ) = 1411 + ( ) = 18 ( ) + 2 = 2( ) + 3 = 5( ) + 1 = 2( ) + 1 = 9 10 - ( ) = 217 - ( ) = 718 - ( ) = 189 - ( ) = 5 ( ) + 11 = 19( ) + 1 = 10( ) + 5 = 9( ) + 2 = 3 ( ) - 16 = 3( ) - 16 = 4( ) - 13 = 7( ) - 14 = 5 2 + ( ) = 2 6 + ( ) = 11 2 + ( ) = 20 1 + ( ) = 4 13 - ( ) = 138 - ( ) = 67 - ( ) = 7 5 - ( ) = 0 ( ) + 2 = 5( ) + 1 = 6( ) + 12 = 20( ) + 2 = 19 ( ) - 16 = 4( ) - 5 = 2( ) - 16 = 3( ) - 16 = 4

3 + ( ) = 127 + ( ) = 711 + ( ) = 1613 + ( ) = 19

4 - ( ) = 3

5 - ( ) = 013 - ( ) = 1317 - ( ) = 15 9 - ( ) = 910 - ( ) = 9 5 - ( ) = 018 - ( ) = 5 ( ) - 14 = 6( ) - 3 = 12( ) - 13 = 3( ) - 7 = 11 1 + ( ) = 1 3 + ( ) = 3 2 + ( ) = 417 + ( ) = 18 5 + ( ) = 11 1 + ( ) = 1

6 3 + ( ) = 10 3 + ( ) = 3

班别：________ 姓名：________ 学号：________ 成绩:________ ( ) + 9 = 15( ) + 7 = 13( ) + 1 = 3( ) + 10 = 16 ( ) + 10 = 17( ) + 3 = 3( ) + 3 = 5( ) + 6 = 19 16 - ( ) = 315 - ( ) = 614 - ( ) = 28 - ( ) = 6 ( ) - 1 = 10( ) - 17 = 119 - ( ) = 4( ) - 6 = 3 20 - ( ) = 17 3 - ( ) = 17 - ( ) = 38 - ( ) = 2 ( ) + 7 = 12( ) + 1 = 1( ) + 8 = 16( ) + 2 = 2 ( ) - 18 = 1( ) - 9 = 9( ) - 1 = 9( ) - 11 = 1 4 + ( ) = 11 5 + ( ) = 1211 + ( ) = 19 2 + ( ) = 2 ( ) + 1 = 1( ) + 13 = 19( ) + 1 = 1( ) + 10 = 10 ( ) - 14 = 6( ) - 10 = 3( ) - 7 = 4( ) - 3 = 9 4 + ( ) = 12 1 + ( ) = 5 4 + ( ) = 1710 + ( ) = 14 ( ) + 10 = 11( ) + 2 = 8( ) + 3 = 13( ) + 1 = 1 19 - ( ) = 1515 - ( ) = 89 - ( ) = 6 1 - ( ) = 1 ( ) + 2 = 4( ) + 7 = 10( ) + 16 = 20( ) + 9 = 16 ( ) - 16 = 4( ) - 9 = 10( ) - 10 = 6( ) - 10 = 9 3 + ( ) = 138 + ( ) = 2014 + ( ) = 2012 + ( ) = 12 8 - ( ) = 213 - ( ) = 1320 - ( ) = 520 - ( ) = 4 ( ) + 7 = 9( ) + 2 = 11( ) + 1 = 1( ) + 4 = 19 ( ) - 9 = 4( ) - 17 = 2( ) - 11 = 4( ) - 9 = 9 1 + ( ) = 18 + ( ) = 12 5 + ( ) = 5 2 + ( ) = 2 9 - ( ) = 7 5 - ( ) = 514 - ( ) = 515 - ( ) = 0 12 - ( ) = 1213 - ( ) = 017 - ( ) = 4 2 - ( ) = 1 ( ) - 1 = 18( ) - 3 = 8( ) - 7 = 10( ) - 8 = 9 3 + ( ) = 17 6 + ( ) = 17 2 + ( ) = 215 + ( ) = 20 8 + ( ) = 10 6 + ( ) = 14 2 + ( ) = 10 3 + ( ) = 3

班别：________ 姓名：________ 学号：________ 成绩:________ ( ) + 10 = 20( ) + 2 = 17( ) + 6 = 17( ) + 3 = 3 ( ) + 1 = 1( ) + 8 = 13( ) + 6 = 17( ) + 5 = 8 4 - ( ) = 3 3 - ( ) = 10 - ( ) = 010 - ( ) = 5 ( ) - 5 = 3( ) - 9 = 814 - ( ) = 14( ) - 15 = 5 2 - ( ) = 010 - ( ) = 411 - ( ) = 48 - ( ) = 0 ( ) + 12 = 15( ) + 4 = 9( ) + 12 = 14( ) + 2 = 6 ( ) - 11 = 3( ) - 13 = 4( ) - 13 = 2( ) - 10 = 2 12 + ( ) = 129 + ( ) = 914 + ( ) = 20 6 + ( ) = 17 ( ) + 3 = 8( ) + 10 = 10( ) + 9 = 11( ) + 4 = 9 ( ) - 16 = 1( ) - 7 = 8( ) - 18 = 1( ) - 9 = 11 13 + ( ) = 20 3 + ( ) = 4 5 + ( ) = 20 3 + ( ) = 4 ( ) + 9 = 19( ) + 7 = 10( ) + 18 = 19( ) + 2 = 3 15 - ( ) = 717 - ( ) = 320 - ( ) = 012 - ( ) = 10 ( ) + 2 = 7( ) + 2 = 9( ) + 4 = 14( ) + 3 = 4 ( ) - 14 = 6( ) - 15 = 2( ) - 13 = 4( ) - 8 = 9 6 + ( ) = 720 + ( ) = 2012 + ( ) = 127 + ( ) = 15 14 - ( ) = 1317 - ( ) = 1411 - ( ) = 512 - ( ) = 1 ( ) + 4 = 15( ) + 10 = 20( ) + 12 = 12( ) + 1 = 1 ( ) - 2 = 14( ) - 15 = 1( ) - 13 = 2( ) - 9 = 2 6 + ( ) = 7 1 + ( ) = 110 + ( ) = 19 4 + ( ) = 4 6 - ( ) = 414 - ( ) = 1212 - ( ) = 120 - ( ) = 13 5 - ( ) = 4 5 - ( ) = 39 - ( ) = 914 - ( ) = 6 ( ) - 10 = 8( ) - 19 = 1( ) - 2 = 2( ) - 3 = 6 5 + ( ) = 128 + ( ) = 14 4 + ( ) = 6 1 + ( ) = 2 15 + ( ) = 17 6 + ( ) = 8 4 + ( ) = 15 3 + ( ) = 8