52×4.7 4.7×15 6.7×53简便运算如题0v0

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 17:53:08
52×4.74.7×156.7×53简便运算如题0v052×4.74.7×156.7×53简便运算如题0v052×4.74.7×156.7×53简便运算如题0v052×4.7+4.7×15+6.7×5

52×4.7 4.7×15 6.7×53简便运算如题0v0
52×4.7 4.7×15 6.7×53简便运算
如题0v0

52×4.7 4.7×15 6.7×53简便运算如题0v0
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

52×4.7
=(50+2)×4.7
=235+9.4
=244.4
4.7×15
=4.7×(10+5)
=47+23.5
=70.5
6.7×53
=6.7×(50+3)
=335+22.1
=357.1