Răspuns:
a)560mg+56cg=
56cg=560mg
560mg+560mg=1120mg=1,12g
b)7hg+2dag+5g=
7hg=0,07 dag
2dag=2dag
5g=0,5dag
0,07dag+2dag+0,5dag=2,57dag=25,7g
c)1kg+3dag+5g=
1kg=1kg
3dag=0,03kg
5g=0,005kg
1kg+0,03kg+0,005kg=1,035kg=1035000
d)4hg-259g+15dag-1g=
4hg=400g
259g=259g
15dag=150g
1g=1g
400g-259g+150g-1g=141+149=290g
e)5g+5dg-5cg=
5g=500cg
5dg=50cg
5cg=5cg
500cg+50ch-5cg=545cg
f)1kg-99dag+47dag
1kg=1000g
99dag=990g
47dag=470g
1000g-990g+470g=480g
g)670kg-6000dag
670kg=670000g
6000dag=60000g
670000g-60000g=70000g
h)300mg+200cg+14g
300mg=3dg
200cg=20dg
14g=140dg
3dg+20dg+140dg=163dg
i)la i nu înțeleg "whg"poate voiai să zici 2hg....