Question

0.975×0.25+9又3/4×73-9.75简便运算怎么算?

Answer 1

0.975x0.25+9又3/4x73-9.75
=9.75x(0.25÷10)+9.75x73-9.75
=9.75x0.025+9.75x73-9.75
=9.75x(0.025+73-1)
=9.75x72.025
=10x72.025-0.25x72.025
=720.25-18.00625
=702.24375

Answer 2

原式＝0.975×0.25+9.75×73-9.75
＝0.975×(0.25+730-10)
＝0.975×720.25
＝720.25×(1-0.025)
＝720.25-720.25×0.025
＝720.25-18.00625
＝702.24325