问题 解答题
脱式计算.
84÷4-90÷95×11+4150-50-30÷5
380-(640-25×24)336÷(25×2+34)(56+13×4)÷12.
答案

①84÷4-90÷9

=21-10

=11;

②5×11+4

=55+4

=59;

③150-50-30÷5

=150-50-6

=150-56

=94;

④380-(640-25×24)

=380-(640-600)

=380-40

=340;

⑤336÷(25×2+34)

=336÷(50+34)

=336÷84

=4;

⑥(56+13×4)÷12

=(56+52)÷12

=108÷12

=9.

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