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:<,=,>,<.