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52x6 38x6 78的简便运算

52X6+ 38X6+ 78=6x(52+38)+78=6x90+78=540+78=618 您好,答题不易 如有帮助请采纳,谢谢

52x6 +38x6+ 78=(52+38)x6+78=90x6+78=540+78=618

52x6十38x6十78=(52十38)x6十78=90 x6十78=540 十78=618

52X38十38X6十78=38x(52+6+2)+2=38x60+2=2282 如有帮助请采纳,如对本题有疑问可追问,Good luck!

52X6十38X6+78=6X(5z十38)十78=6X90+78=540十78=618

38x+52x=540

38*6+52*6+78=38*6+52*6+13*6=(38+52+13)*6=103*6=618

简便计算99x78+ 33x6=99x78+ 33x3x2=99x(78+2)=99x80=(100-1)x80=100x80-80=8000-80=7920

67*6+38*6+72=67*6+38*6+12*6=(67+38+12)*6=117*6=702

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