Question

18. Completați:
a) 123 mm + 17,15 cm+2 m=......... dm;
b) 15,99 km +18 hm+2358 m= dam;
c) 93 m+88,38 dam+1000 cm= mm;
d) 861 mm +13 dam +17,232 km= ..... cm;
e) 15,17 mm +11,324 cm+0,17 dm = m;
f) 1 km +2,7 hm +130 dam= ......... km

dau coroana urgent va rog!!!!​

Answer 1

Explicație pas cu pas:

a

123 mm=1.23 dm

17.15 cm=1.715 dm

2 m=20 dm

1.23+1.715+20=22.955 dm

b

15.99 km=1599 dam

18 hm= 180 dam

2358 m= 235.8 dam

1599+189+235.8=2023.8 dam

c

93 m=93000 mm

88.38 dam= 883800 mm

1000 cm= 10000 mm

93000+883800+10000=986800 mm

d

861 mm= 86.1 cm

13 dam= 13000 cm

17.232=1723200000 cm

86.1+13000+1723200000=1723213086.1 cm

e

15.17 mm= 0.01517 m

11.324 cm=0.11324 m

0.17 dm=0.017 m

0.01517+0.11324+0.017=0.14541

f

2.7 hm=0.27 km

130 dam=1.3 km

1+0.27+1.3=2.57 km