500/40 =50/4 =25/2 =12.5
500÷40的简便计算 =50÷4 =12.5
就是把括号打开,把顺序调整一下就可以了。500/5=100,再去除以370
请采纳
列式计算为 5000÷25 =5000÷5÷5 =1000÷5 =200 所以原式的计算结果为200.
解: 300×(500-400÷25) =300×【500-(400×4)÷(25×4)】 =300×(500-1600÷100) =300×(500-16) =300×484 =145200
500÷(25×2) =500÷50 =10
500÷75-55÷73-358÷73 =500÷25÷3-(55+358)÷73 =20÷3-413÷73 =20/3-413/73 =(20×73-413×3)÷(3×73) =221/219
500-(720-40×15)÷30 =500-(720-600)÷30 =500-120÷30 =500-4 =496
500÷25+85×42 =20+3570 =3590