Question

10*(920-20)= 8*(720-700)= 184*100-300= 100*391-3000=

Answer 1

10*(920-20)=10*900=9000
8*(720-700)=8*20=160
184*100-300=18400-300=18100
100*391-3000=39100-3000=36100

Answer 2

10·(920-20)=10·900=9000
8·(720-700)=8·20=160
184·100-300=18400-300=18100
100·391-3000=39100-3000=36100