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用简便方法计算237+186+6375+62+438562+137+38762-196-4989-305-95425+72+128

题目详情
用简便方法计算
237+186+63           75+62+438           562+137+38
762-196-4           989-305-95           425+72+128
用简便方法计算
237+186+63           75+62+438           562+137+38
762-196-4           989-305-95           425+72+128

237+186+63           75+62+438           562+137+38
762-196-4           989-305-95           425+72+128
237+186+63           75+62+438           562+137+38762-196-4           989-305-95           425+72+128237+186+63           75+62+438           562+137+38237+186+63           75+62+438           562+137+38762-196-4           989-305-95           425+72+128762-196-4           989-305-95           425+72+128
▼优质解答
答案和解析
(1)237+186+63
=(237+63)+186
=300+186
=486

(2)75+62+438 
=75+(62+438)
=75+500
=575

(3)562+137+38
=(562+38)+137
=600+137
=737

(4)762-196-4 
=762-(196+4)
=762-200
=562

(5)989-305-95 
=989-(305+95)
=989-400
=589

(6)425+72+128
=425+(72+128)
=425+200
=625