27g+34g=270dg+340dg=610dg
50mg+300mg=500cg+3000cg=3500cg
420q+30q=450q
680g+12dag=6800dg+1200dc=8000dg
68hg-100dag=680dag-100dag=580dag
47kg-210dag=470hg-21hg=449hg
300cg-12dg=30dg-12dg=18dg
4×50cg÷2=4x5dg÷2=10dg
70gx2÷5=7000cgx2÷5=2800cg
65hgx4x5=6,5kgx4x5=130kg