98-32-28= 156-19-81= 217-65-135= 345-66-34= 205+87+13= 398-163-137= 要简便算

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/24 21:22:43
98-32-28=156-19-81=217-65-135=345-66-34=205+87+13=398-163-137=要简便算98-32-28=156-19-81=217-65-135=345-

98-32-28= 156-19-81= 217-65-135= 345-66-34= 205+87+13= 398-163-137= 要简便算
98-32-28= 156-19-81= 217-65-135= 345-66-34= 205+87+13= 398-163-137= 要简便算

98-32-28= 156-19-81= 217-65-135= 345-66-34= 205+87+13= 398-163-137= 要简便算
98-32-28
=98-(32+28)
=98-60
=38
156-19-81
=156-(19+81)
=156-100
=56
217-65-135
=217-(65+135)
=217-200
=17
345-66-34
= 345-(66+34)
=345-100
=245
205+87+13
= 205+(87+13)
=205+100
=305
398-163-137
=398-(163+137)
=398-300
=98