Question

99x99+99

Answer 1

99.(100-1)+99
=9900-99+99
=9900

Answer 2

99.99+99

=99.99+99.1

=99.(99+1)

=99.100

=9900

Answer 3

99 x 99 + 99 = 9801 + 99

                   = 9900

Answer 4

99 x 99 + 99

= 99 x 99 + 99 x 1

= 99 x ( 99 + 1 )

= 99 x 100

= 9900

Answer 5

   99 x 99 + 99

= 9801 + 99

= 9900

Ai thấy đúng tk

Ai thấy sai sửa nhé

Answer 6

\(99\times99+99\)

\(=99\times\left(99+1\right)\)

\(=99\times100\)

\(=9900\)

Answer 7

99.99+99=99.[99+1]=99.100=9900

Answer 8

= 9900

Answer 9

\(99\times99+99\)

\(=99\times\left(99+1\right)\)

\(=99\times100\)

\(=9900\)

Answer 10

99 x 99 + 99 = 99 x ( 99+ 1 )

                     = 99 x 100

                     = 9900

Answer 11

nay giup minh 72x101x72+28x99x28

Answer 12

99x99+99

=99x99+99x1

=99x(99+1)

=99x100

=9900

Answer 13

dap an la 9900

Answer 14

=9801+99

+9900

hoktot

Answer 15

ido ff6790

Answer 16

hello