Math problems in the fourth grade of primary school: 99999X22222+33333X33334. - Training Enrollment Network

Math problems in the fourth grade of primary school: 99999X22222+33333X33334.

Method 1: 99999 * 22222+33333 * 3334 = 9999 * 2222+3 *111* (33333+1).

=99999*22222+ 1 1 1 1 1*(99999+3)=99999(22222+ 1 1 1 1 1)+33333

=99999*33333+33333

=33333(99999+ 1)

=3333300000

Method 2: 99999X22222+33333X33334

=33333X3X22222+33333X33334

=33333X66666+33333X33334

= 3333x (66666+3334) (association rule)

=33333X 100000

=3333300000

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