问题 解答题
脱式计算
36×4×5
900-125×6
46×7+109(23+367)×2
(120+180)×8(100-64)÷4
答案

(1)36×4×5

=36×(4×5)

=36×20

=720;

(2)900-125×6

=900-750

=150;

(3)46×7+109

=322+109

=431;

(4)(23+367)×2

=390×2

=780;

(5)(120+180)×8

=300×8

=2400;

(6)(100-64)÷4

=36÷4

=9.

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