1. Fractions A tank has 12 liters of water in it, and it is full. How many liters of water needs to be added so that it is full? 2929 ?

2. Fractions A tank has 12 liters of water in it, and it is full. How many liters of water needs to be added so that it is full? 2929 ?

3. Fractions Water tank full 2929 full ?

4. Fractions Water tank full 2929 full ?

5. Fractions Water tank full 2929 full 12 liters? ?

6. Fractions Water tank full 66 2929 full 12 liters? ?

7. ? Fractions Water tank full 66 2929 full 12 liters 6666666 ?

8. 42 liters Fractions Water tank full 66 2929 full 12 liters 6666666 42

9. 42 liters Fractions Water tank full 66 2929 full 12 liters 6666666 Need 42 additional liters of water to fill the tank. 42

10. Fractions A tank has 12 liters of water in it, and it is full. How many liters of water needs to be added so that it is full? 2929 Pre-Algebra Approach: ?

11. Fractions Pre-Algebra Approach: 2929  ? = 12 liters of water ? = 12 liters  9 2 = 54 liters Add: 7  54 liters of water = 42 liters. 9 ?

12. Fractions Pre-Algebra Approach: 2929  ? = 12 liters of water ? = 12 liters  9 2 = 54 liters Add: 7  54 liters of water = 42 liters. 9 42

13. Fractions Graphical Pre-Algebra Intuitive to solve the problem by easily identifying the critical mathematical operations. Requires knowledge on expression of fractions and multiplications of whole numbers to solve the problem. (4 th grade)

14. Fractions Graphical Pre-Algebra Intuitive to solve the problem by easily identifying the critical mathematical operations. Requires knowledge on expression of fractions and multiplications of whole numbers to solve the problem. (4 th grade) Relies on the knowledge of fraction multiplication by an improper fraction to solve the problem.