Equivalent fractions: thirds and sixths

Find the missing number so the two fractions are equal.

1. Hana writes 4/6 = □/3. What number goes in the box?
2. Leo writes 2/3 = □/6. What number goes in the box?
3. Hana writes 2/6 = □/3. What number goes in the box?
4. Ravi writes 3/6 = □/2. What number goes in the box?
5. Maya writes 2/3 = □/6. What number goes in the box?
6. Chloe writes 4/6 = □/3. What number goes in the box?
7. Priya writes 2/3 = □/6. What number goes in the box?
8. Zoe writes 4/6 = □/3. What number goes in the box?
9. Ravi writes 1/2 = □/4. What number goes in the box?
10. Priya writes 3/6 = □/2. What number goes in the box?
11. Theo writes 3/6 = □/2. What number goes in the box?
12. Zoe writes 1/2 = □/6. What number goes in the box?
13. Maya writes 2/6 = □/3. What number goes in the box?
14. Hana writes 3/9 = □/3. What number goes in the box?
15. Priya writes 6/9 = □/3. What number goes in the box?
16. Hana writes 1/3 = □/6. What number goes in the box?
17. Omar writes 1/2 = □/6. What number goes in the box?
18. Leo writes 1/3 = □/6. What number goes in the box?
19. Kai writes 2/6 = □/3. What number goes in the box?
20. Priya writes 2/3 = □/12. What number goes in the box?