①267÷9≈
②82×31≈
③817÷9≈
④905÷3≈
⑤49×41≈
⑥53×62≈
①151÷3≈
②212÷7≈
③81×49≈
④59×20≈
⑤41÷5≈
⑥239÷4≈
×8= 1-0× =
599÷6≈ 52-32= 0.75÷15=
68×51≈