HHELP another math up thing #2 _

1. Estimate each amount. Show or explain how you estimated one of the amounts.

a) 3/8 of 3/4

b) 7 1/0 of 8 1/2

c) 5/2 of 5/2

2. Calculate each amount.

a) 4/5 × 3 1/5

b) 4 2/3 × 3 2/5

c) 9/4 × 6/5

3. a) Explain why this is true:
3 1/4 × 2 2/3 > 6.

b) Explain why 3 1/4 × 2 2/3 is the area of a rectangle
3 1/4 units × 2 2/3 units.

(: plz help :D