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估算.321÷8≈41×59≈559÷8≈21×51≈50÷7≈81×39≈

题目详情
估算.
321÷8≈41×59≈559÷8≈
21×51≈50÷7≈81×39≈
321÷8≈41×59≈559÷8≈
21×51≈50÷7≈81×39≈
321÷8≈41×59≈559÷8≈21×51≈50÷7≈81×39≈321÷8≈41×59≈559÷8≈321÷8≈41×59≈559÷8≈21×51≈50÷7≈81×39≈21×51≈50÷7≈81×39≈
▼优质解答
答案和解析
321÷8≈320÷8=4041×59≈40×60=2400559÷8≈560÷8=70
21×51≈20×50=100050÷7≈49÷7=781×39≈80×40=3200
321÷8≈320÷8=4041×59≈40×60=2400559÷8≈560÷8=7021×51≈20×50=100050÷7≈49÷7=781×39≈80×40=3200321÷8≈320÷8=4041×59≈40×60=2400559÷8≈560÷8=70321÷8≈320÷8=40321÷8≈320÷8=4041×59≈40×60=240041×59≈40×60=2400559÷8≈560÷8=70559÷8≈560÷8=7021×51≈20×50=100050÷7≈49÷7=781×39≈80×40=320021×51≈20×50=100021×51≈20×50=100050÷7≈49÷7=750÷7≈49÷7=781×39≈80×40=320081×39≈80×40=3200