(II) 23 +18 (12) 13 +33 (13) 35 +26 (14) 39 +38 (15) 37 +59 (16) 39 +14 (17) 26 +44 (18) 53 +27 (19) 42 +51 (20) 49 +48

(II) $23 + 18 = 41$<br />(12) $13 + 33 = 46$<br />(13) $35 + 26 = 61$<br />(14) $39 + 38 = 77$<br />(15) $37 + 59 = 96$<br />(16) $39 + 14 = 53$<br />(17) $26 + 44 = 70$<br />(18) $53 + 27 = 80$<br />(19) $42 + 51 = 93$<br />(20) $49 + 48 = 97$