52×4.7 4.7×15 6.7×53简便运算如题0v0_数学解答

52×4.7 4.7×15 6.7×53简便运算
如题0v0

人气：232 ℃　时间：2020-04-23 06:51:22

解答

52×4.7+4.7×15+6.7×53
=（52+15）×4.7 +6.7×53
=67×4.7 +67×5.3
=67×（4.7+5.3）
=67×10
=670