问题 填空题

在横线里填上“>”、“<”或“=”.

(1)85×40÷50______85+40×50

(2)840÷21______840÷3÷7

(3)210-210÷30______210÷30-3

(4)150-(50+5)______150-(50-5)

答案

(1)85×40÷50,

=3400÷50,

=68;

85+40×50,

=85+2000,

=2085;

所以,85×40÷50<85+40×50;

(2)840÷21=40,

840÷3÷7=40,

所以,840÷21=840÷3÷7;

(3)210-210÷30,

=210-7,

=203;

210÷30-3,

=7-3,

=4;

所以,210-210÷30>210÷30-3;

(4)150-(50+5),

=150-55,

=95;

150-(50-5),

=150-45,

=105;

所以,150-(50+5)<150-(50-5);

故答案为:<,=,>,<.

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