Question

7777x5+9999x7+2222用简便方法怎么做

小学四年级的做法

Answer 1

7777x5+9999x7+2222
=1111x7x5+1111x9x7+1111x2
=1111x35+1111x63+1111x2
=1111x(35+63+2)
=1111x100
=111100

Answer 2

7777x5+9999x7+2222
=1111x7x5+1111x9x7+2222
=1111x35+1111x63+2222
=1111x（63+35）+2222
=1111x98+2222
=1111x（98+2）
=1111x100
=111100

Answer 3

7777×5+9999×7+2222
=1111×7×5+1111×9×7+1111×2
=1111×35+1111×63+1111×2
=1111×(35+63+2)
=1111×100
=111100