Question

11 ×10 +89 ×5 +89 ×3 +89 ×2

=

=

=

=

Answer 1

=[11+89]x[10+2+3+5]

=100x20

=2000

Answer 2

=110 + 89 * (5+3+2)

=110 + 89 * 10

= 110 + 890 

=1000