Question

calculati si completati
1,45dam+873cm=...dm
753cm-48,4dm=...m
245,6dam-16,8hm=...cm
12dm+...cm=0.2dam
2,8hm+...dam=300m
65km-..hm=600dam
5m+7..=5.07m
0.8+0.5..=850m

Answer 1

1. 145 dm+87.3dm=232.2dm
2. 7,53m-4,84m=2.69m
3. 24560cm-16800cm=7760cm
4. 12dm+...cm=0.2dam => 120cm+...cm=200cm => ...cm=80cm
5. 2,8hm+...dam=300m =>28dam+...dam=30dam =>...dam=2dam
6. 65km- ...hm=600dam => 650hm-...hm=60hm =>...hm=590hm
7. 5m+7...=5.07m => 7...=7cm
8. 0.8+0.5...=850m =>0.8km+0.5hm=850m

Answer 2

1,45 dam + 873 cm = 145 dm + 87,3 dm = 232,3 dm
753 cm - 48,4 dm = 7,53 m - 4,84 m = 2,69 m
245,6 dam - 16,8 hm =245600 m - 168000 = 77600 m
12 dm + cm = 0,2 dam ; 200 cm - 120 cm = 80 cm
2,8 hm + ... dam = 300 m ; 30 dam - 28 dam = 2 dam
65 km - hm = 600 dam ; 650 hm - 60 hm = 490 hm
5 m + 7 ... = 5,07 m ; 5 m + 0,07 m = 5,7 m ; 0,07 m = 7 cm ; ⇒5 m + 7 cm = 5,07 m
0,8 .... + 0,5 ... = 850 m ⇔ 800 m + 50 m = 850 m  800 m =0,8 km ; 50 m = 0,5 hm  ⇒ 0,8 km + 0,5 hm = 850 m