①90×55=
②910-630=
③35×40=
④32×61=
66×125= 409×13= 60×219=
203×15= 42×138= 19×450=
①40×300=②540÷ 90=③159-74-26=④930÷30=
⑤120×60=⑥422÷71≈⑦218+82×0=⑧50×2÷50×2=
⑴306×24= ⑵703×50= ⑶280×36=
⑷961÷31= ⑸370÷60= ⑹816÷48=
⑺35×440= ⑻306÷34= ⑼533÷26=
944÷59= 975÷24= ★403÷16=
①45×63=
②502×17=
③36×240=
④408÷68=
⑤577÷19=
⑥700÷60=
①6×(-8)=6
②(+6)÷2=5
③÷3+1=3
④3×+=16
⑤×-15=9
⑥2×(-)=10