问题
解答题
把水果放在相应的托盘里.(在横线上填上“>”“<”或“=”)
224÷4÷2______624÷6÷4
253÷3÷2______850÷2÷5
645÷5÷3______288÷3÷2
392÷7×2______42×5÷7.
答案
(1)224÷4÷2,
=56÷2,
=28;
624÷6÷4,
=104÷4,
=26;
28>26;
所以,224÷4÷2>624÷6÷4;
(2)253÷3÷2,
≈80÷2,
=40;
850÷2÷5,
=425÷5,
=85;
40<85;
所以,253÷3÷2<850÷2÷5;
(3)645÷5÷3,
=129÷3,
=43;
288÷3÷2,
=96÷2,
=48;
43<48;
所以,645÷5÷3<288÷3÷2;
(4)392÷7×2,
=56×2,
=112;
42×5÷7,
=210÷7,
=30;
112>30;
所以,392÷7×2>42×5÷7.
故答案为:>,<,<,>.