问题 解答题

脱式计算:

360+25×4

(38+82)÷4

33+27×3

850-250×3.

答案

(1)360+25×4

=360+100

=460;

(2)(38+82)÷4

=120÷4

=30;

(3)33+27×3

=33+87

=120;

(4)850-250×3

=850-750

=100.

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