3 × 20 - 4 × 10 , 5 × 30 + 10 ÷ 2 , 4 × 30 - 40 × 3 , 50 × 5 + 0 ÷ 5 , ( 75 + 25 ) ÷ 100 , ( 30 + 40 ) × 10 .

1) I asked them how many types of games consoles there were. 2) The Maths teacher wanted to know if they were allowed to come in. 3) I asked them if they had ever played any strategy games. 4) I told them to pay attention. 5) I asked him when Lara Croft had first appeared in a game. 6) I asked them if they were listening to me.  7) I asked them not to throw things at me. 8) She asked me what I would do about it. 9) I told her not to shout.

3*20-4*10=60-40=205*30+10/2=150+5=1554*30-40*3=120-120=050*5+0/5=250+0=250(75+25)/100=100/100=1(30+40)*10=70*10=700