在横线里填上“>”、“<”或“=”. 18×4×12______18×(4×12) 140-30×2______(140-30
在横线里填上“>”、“<”或“=”.18×4×12______18×(4×12)140-30×2______(140-30)×238+262+0______38×262×...
在横线里填上“>”、“<”或“=”. 18×4×12______18×(4×12) 140-30×2______(140-30)×2 38+262+0______38×262×0 358-137-63______358-(137+63) 72÷6÷2______72÷(6×2) (200-25)×4______200-25×4.
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(1)18×4×12,
=72×12,
=864;
18×(4×12),
=18×48,
=864;
864=864;
所以18×4×12=18×(4×12).
(2)140-30×2,
=140-60,
=80;
(140-30)×2,
=110×2,
=220;
80<120;
所以:140-30×2<(140-30)×2;
(3)38+262+0=300;
38×262×0=0;
300>0;
所以:38+262+0>38×262×0;
(4)358-137-63,
=221-63,
=158;
358-(137+63),
=358-200,
=158;
158=158;
358-137-63=358-(137+63);
(5)72÷6÷2,
=12÷2,
=6;
72÷(6×2),
=72÷12,
=6;
6=6;
所以:72÷6÷2=72÷(6×2);
(6)(200-25)×4,
=175×4,
=700,
200-25×4,
=200-100,
=100;
700>100;
所以:(200-25)×4>200-25×4.
故答案为:=,<,>,=,=,>.
=72×12,
=864;
18×(4×12),
=18×48,
=864;
864=864;
所以18×4×12=18×(4×12).
(2)140-30×2,
=140-60,
=80;
(140-30)×2,
=110×2,
=220;
80<120;
所以:140-30×2<(140-30)×2;
(3)38+262+0=300;
38×262×0=0;
300>0;
所以:38+262+0>38×262×0;
(4)358-137-63,
=221-63,
=158;
358-(137+63),
=358-200,
=158;
158=158;
358-137-63=358-(137+63);
(5)72÷6÷2,
=12÷2,
=6;
72÷(6×2),
=72÷12,
=6;
6=6;
所以:72÷6÷2=72÷(6×2);
(6)(200-25)×4,
=175×4,
=700,
200-25×4,
=200-100,
=100;
700>100;
所以:(200-25)×4>200-25×4.
故答案为:=,<,>,=,=,>.
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