下面各題怎樣計算簡便就怎樣算

2021-03-04 08:48:57 字數 902 閱讀 9575

1樓:貓九尾

①1379+450÷18×40

=1379+25×40,

=1379+1000,

=2379;

②(5+0.4×0.25)÷1.5

=(5+0.1)÷1.5,

=5.1÷1.5,

=3.4;③27

×14+57

÷4  =27

×14+57

×14,=(27+5

7)×14,

=1×14,

=14;④35÷[7

8×(1-27)]

=35÷(78×5

7),=35÷58,

=56.

計算下面各題,怎樣簡便就怎樣計算,要寫出必要的計算過程.①44×25②6200÷25÷4③65×5-35÷5④362-(

2樓:尉遲俟兜

①44×25,

=11×4×25,

=11×(4×25),

=11×100,

=1100;

②6200÷25÷4,

=6200÷(25×4),

=6200÷100,

=62;

③65×5-35÷5,

=325-7,

=318;

④362-(16+27)×4,

=362-43×4,

=362-172,

=190;

⑤51.27-8.66-1.34,

=51.27-(8.66+1.34),

=51.27-10,

=41.27;

⑥75+12.7+25+6.3,

=(75+25)+(12.7+6.3),

=100+19,

=119.

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