answer all these questions

1. (48 ÷ 3) x 4 =

2. 40 ÷ (5 – 3) =

3. (5 + 2) x 8 =

4. (28 + 14 ÷ 7) – (60 ÷4) =

5. 3 x (15+ 3 x 7) – (12÷3 ) =

6. ( 1000 – 725) + (100 - 72) =

7. 1 200 – (15x8 +9 x 12)=

8. (8 100 ÷ 900 + (640 ÷ 80)=

(and tell me if its pmdas or gmdas)