Cevap:
20,301,13,275,810,342,460,1050,840
Adım adım açıklama:
11 - ) 20 cm 65-45 = (6-5) (5-5) = 2 0 =20
12-) 137 + (137 +27) = 137+164 =301 3metre 1cm
13-) 100 cm : 1metre 100-87 =13
14-)55x5 =275 2metre 75cm
15-) 270x3 =810 8 metre 10cm
16-)57x6=342 3metre 42cm
17-)6 metre :600cm 600-(70+70) = 600-140 =460
18-) 8x50 =850 + 8x25 =200 =) 850 +200 =1050
19-)120x7 =840
