1.4元/把
3.5元/支
①1.2元+5.6元=
②3.5元+10.2元=
③0.8元+1.1元=
④6.8元-5.3元=
⑤13.6元-3.5元=
⑥9.5元-0.4元=
387+102= 4.8× = 18.6-5.6= 0.25×39×4=
9.6+0.1= + = 32×125%= ×8+ =