7777777×9999999

武背卢50767778x9999+3333x6666 -
樊兴郊17745479671 ______ 7778x9999+3333x6666 =7778*9999+3333*3*2222 =7778*9999+9999*2222 =9999*(7778+2222) =99990000

武背卢50767778乘9999加3333乘6666等于? -
樊兴郊17745479671 ______ 解:7778*9999+3333*6666 =7778*9999+9999*2222 =﹙7778+2222﹚*9999 =10000*9999 =99990000

武背卢50767777x5+9999x7+2222用简便方法怎么做 -
樊兴郊17745479671 ______ 7777x5+9999x7+2222=1111x7x5+1111x9x7+1111x2=1111x35+1111x63+1111x2=1111x(35+63+2)=1111x100=111100

武背卢50769999乘以7778+3333乘以6666(简便运算) 急!急!急! -
樊兴郊17745479671 ______ 9999*7778+3333*6666 =9999*7778+3333*3*2222 =9999*7778+9999*2222 =9999*(7778+2222) =9999*10000 =99990000

武背卢5076求7778乘9999加3333乘6666一式简便解法
樊兴郊17745479671 ______ 7778*9999+3333*6666 =7778*3*3333+3333*6666 =23334*3333+3333*6666 =3333*(23334+6666) =3333*30000 =99990000

武背卢50767778*9999+3333*6666这道题怎么做的啊?? -
樊兴郊17745479671 ______ 提取99997778*9999+3333*6666=9999*(7778+2222)=9999*10000=99990000

武背卢5076巧算小学四年级7777x5+9999x7+2222要过程急用 -
樊兴郊17745479671 ______ 7777x5+9999x7+2222=7*1111*5+9*1111*7+2*1111=1111*(35+63+2)=1111*100=111100

武背卢50767777x5+9999x7+2222用乘法分配律怎么算? -
樊兴郊17745479671 ______ 原式=1111*7*5+1111*9*7+1111*2=1111*(7*5+9*7+2)=1111*100=111100

武背卢5076简便运箅7778*9999+3333*6666
樊兴郊17745479671 ______ =3333*3*7778+3333*3*2222=9999*(7778+2222)=9999*10000=99990000