Question

56×72-48×46-52×46+144×72等于多少简便计算？

Answer 1

简便计算即把相同的合到一块。
56x72-48x46一52x46十144x72
（56十144）x72一（48＋52）x46
＝200×72一100x46
＝14200一4600
＝9600

Answer 2

56×72-48×46-52×46+144×72
=56×72+144×72-48×46-52×46
=(56+144)×72-(48+52)×46
=200×72-100×46
=14400-4600
=9800

追答

56×72-48×46-52×46+144×72
=56×72+144×72-48×46-52×46
=(56+144)×72-(48+52)×46
=200×72-100×46
=100×2×72-100×46
=100×(144-46)
=100×98
=9800

56×72-48×46-52×46+144×72
=56×72+144×72-48×46-52×46
=(56+144)×72-(48+52)×46
=200×72-100×46
=200×72-100×2×23
=200×(72-23)
=200×49
=9800

Answer 3

56×72-48×46-52×46+144×72
=（56+144）×72-（48+52）×46
=200×72-100×46
=14400-4600
=9800

Answer 4

56x72＋144x72－48x46－52x46
＝72x（56+144）－46（48+52）

Answer 5

56×72-48×46-52×46+144×72
=（56+144）×72-(48+52)×46
=200×72-100×46
=14400-4600
=9800