⑴0.8-0.6=
⑵3.5+2.5=
⑶2.3+3=
⑷5.5-5.0=
⑸6.4-2.2=
⑹1.3+4.6=
⑺3.2+2.2=
⑻3.26-0=
4.6+12.3+5.8 15-(1.2+3.9) 4.6-1.75+2.08 4.28+0.53-3.37