简便运算:25x(5+10);36x34+36x66;125x79 ; 83+83x99;75x101-75;32x4x25

学习 时间:2026-03-30 20:45:39 阅读:1681
25x(5+10) 36x34+36x66 125x79 83+83x99 75x101-75 32x4x25 125x7x8 25x58x4 678+591+409

最佳回答

温柔的小懒虫

英勇的水杯

2026-03-30 20:45:39

25x(5+10)

=(20+5)x15

=300+75

=375

 

36x34+36x66

=36x(34+66)

=36x100

=3600

 

125×79

=125×(80-1)

=125×80-125×1

=10000-125

=9875

 

83+83×99

=83+83×(100-1)

=83×100-83×1

=8300

 

75x101-75

=75x101-75x1

=75x(101-1)

=75x100

=7500

 

32x4x25

=32x(4x25)

=32x100

=3200

 

125x7x8

=(125x8)x7

=1000×7

=7000

 

25x58x4

=25x4x58

=100x58

=5800

 

678+591+409

=678+(591+409)

=678+1000

1678

最新回答共有2条回答

  • 羞涩的睫毛膏
    回复
    2026-03-30 20:45:39

    25x(5+10)

    =(20+5)x15

    =300+75

    =375

     

    36x34+36x66

    =36x(34+66)

    =36x100

    =3600

     

    125×79

    =125×(80-1)

    =125×80-125×1

    =10000-125

    =9875

     

    83+83×99

    =83+83×(100-1)

    =83×100-83×1

    =8300

     

    75x101-75

    =75x101-75x1

    =75x(101-1)

    =75x100

    =7500

     

    32x4x25

    =32x(4x25)

    =32x100

    =3200

     

    125x7x8

    =(125x8)x7

    =1000×7

    =7000

     

    25x58x4

    =25x4x58

    =100x58

    =5800

     

    678+591+409

    =678+(591+409)

    =678+1000

    1678

上一篇 以“生命的精彩”为题,写一篇作文.

下一篇 树的年轮较密的一侧向着哪面?较疏的一侧向着哪面?