用加法列式为:□○□○□○□○□○□
①53+34=
②76-42=
③19+49=
④78-38-13=
⑤33+26+18=
⑥91-(63+19)=
26+3= 5×3= 5+43= 5×2=
4×2= 65+8= 4×4= 3×3=
47-6= 70-40= 5×4= 36+24=
3 3=6 33=9 5 2=10 6 4=2
17÷□=□( )……□( )
□÷□=□(瓶)……□(朵)
□÷□=□(朵)……□(朵)
①﹣(+)
②8.89﹣1.84﹣3.16
③÷9+×
④12.5×0.32×2.5