Реши примеры: 55+26, 91−19, 16+26, 75−14, 98−57; 21−13, 17+67, 85−16, 67−31, 78−41; 95−38, 16+78, 17+19, 85−24, 87−15; 57+37, 36−18, 72+24, 55+43, 73+16; 93−45, 41−14, 14+75, 58+31, 14+35.

55+26 = 81; 91−19 = 72; 16+26 = 42; 75−14 = 61; 98−57 = 41.

21−13 = 8; 17+67 = 84; 85−16 = 69; 67−31 = 36; 78−41 = 37.

95−38 = 57; 16+78 = 94; 17+19 = 36; 85−24 = 61; 87−15 = 72.

57+37 = 94; 36−18 = 18; 72+24 = 96; 55+43 = 98; 73+16 = 89.

93−45 = 48; 41−14 = 27; 14+75 = 89; 58+31 = 89; 14+35 = 49.