Question

38Ⅹ72+63ⅹ72-72简便计算吗？

Answer 1

38x72+63x72-72的简便计算方法是：72x（38+63-1）=72x100=7200

Answer 2

38*72+63*72-72
=（38+63-1）*72
=100*72
=7200

Answer 3

38×72+63×72-72
=（38+63-1）×72
=（38+62）×72
=100×72
=7200

Answer 4

38*72+63*72-72
=72*（38+63-1）
=72*100
=7200

Answer 5

38×72+63×72-72
=72（38+63-1）
=72（38+62）
=72×100
=7200