如题所述
第1个回答 2022-08-19
78乘12+13乘528p这样简便运算
78×12+13×528
=13×(6×12)+13×528 ——把78分解成(13×6)
=13×72+13×528
=13×(72+528)
=13×600
=7800
78×12+13×528
=13×(6×12)+13×528 ——把78分解成(13×6)
=13×72+13×528
=13×(72+528)
=13×600
=7800
第2个回答 2022-08-19
78乘12➕13乘528怎么简便运算?
先将528分解因式,6*88=528,再提取公约数78计算,
78*12+13*528
=78*12+88*8*13
=78*12+78*88
=78*(12+88)
=7*100
=7800本回答被网友采纳
先将528分解因式,6*88=528,再提取公约数78计算,
78*12+13*528
=78*12+88*8*13
=78*12+78*88
=78*(12+88)
=7*100
=7800本回答被网友采纳
第3个回答 2022-08-18
78x12+13x528=78x12+12x528+528=12(78+528)+528=12x606+528=12x600+12x6+528=7200+72+528=7200+600=7800
第4个回答 2022-08-19
78x12+13x528
=78x12+(13x6)x88
=78x12+78x88
=78x(12+88)
=78x100
=7800
=78x12+(13x6)x88
=78x12+78x88
=78x(12+88)
=78x100
=7800
第5个回答 2022-08-18
78x12+13x528
=78x12+13x6x88
=78x12+78x88
=78x(12+88)
=78x100
=7800
=78x12+13x6x88
=78x12+78x88
=78x(12+88)
=78x100
=7800