1 Calculati: a 132 +246; d 2307 +3025; 6 347 + 879; b 208 +120; e 1020+3057; h 122 +58 +37 +3783; c1200 + 2100; 1234+568+1176+142 1127 +58 +39+3456. 9 2. ​