Multiplying Fractions

Question 1:

4 9 × 5 9
20 81

Question 2:

1 2 × 2 3
2 6 = 1 3

Question 3:

1 9 × 2 5
2 45

Question 4:

9 10 × 1 2
9 20

Question 5:

1 2 × 1 2
1 4

Question 6:

3 4 × 7 11
21 44