=999*(2- 1)

=999

(2)32*25

=4*8*25

= 100*8=800

(3) 15*999+ 15

15*(999+ 1)

= 15000

(4) 15+ 16+75+84

=( 15+75)+( 16+84)

=200

(5)825*2-825

=825*(2- 1)

=825

(6)48*25

=4* 12*25

= 100* 12= 1200

(7) 145*999+ 145

145*(999+ 1)

= 145000

(8)45+65+55+35

=(45+55)+(65+35)

=200

(9)96*2-96

=96*(2- 1)

=96

( 10)24*25

=4*6*25

= 100*6=600

Each imitation 1 will do.