问题 解答题
脱式计算(能简算的要简算)
216+384+404+796154-(54+98)17×25×4
160-60÷2420÷35237-58+163-242.
答案

(1)216+384+404+796,

=(216+384)+(404+796),

=600+1200,

=1800;

(2)154-(54+98),

=154-54-98,

=100-98,

=2;

(3)17×25×4,

=17×(25×4),

=17×100,

=1700;

(4)160-60÷2,

=160-30,

=130;

(5)420÷35,

=(420÷7)÷(35÷7),

=60÷5,

=12;

(6)237-58+163-242,

=(237+163)-(58+242),

=400-300,

=100.

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