33*34+34*35+35*36+36*37=怎样简便运算?

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/30 08:58:54
33*34+34*35+35*36+36*37=怎样简便运算?
xA0Emet* Y8qe'11(OXU QpyWS^C_zO, }(7

33*34+34*35+35*36+36*37=怎样简便运算?
33*34+34*35+35*36+36*37=
怎样简便运算?

33*34+34*35+35*36+36*37=怎样简便运算?
(33+35)*34+(35+37)*36
=68*34+72*36
=2312+2592
=4904
(33+35+35+37)*34+(35+37)*(36-34)
=4760+72*2
=4760+144
=4904
(33+35+35+37)*36-(33+35)*(36-34)
=5040-68*2
=5040-136
=4904