2.5×1.25×32-3.7-56.3的简便计算是什么还有999×999+999

问题描述:

2.5×1.25×32-3.7-56.3的简便计算是什么
还有999×999+999

2.5×1.25×32-3.7-56.3
=(2.5×4)×(1.25×8)-(3.7+56.3)
=10×10-60
=100-60
=40
999×999+999
=999×(999+1)
=999×1000
=999000
祝学习进步

(2.5x4)x(1.25x8)-(3.7+56.3)
=10x10-60
=40

2.5×1.25×32-3.7-56.3
=2.5×4×(1.25×8)-(3.7+56.3)
=10×10-60
=100-60
=40

2.5×1.25×32-3.7-56.3=(2.5x4)x(1.25x8)-(3.7+56.3)=10x10-60=100-60=40
999x999+999=999x(999+1)=999x1000=999000