1. Multiply Fractions by Fractions

2. Simplify:

4. Can you try?
multiply the numerators, multiply the denominators !

5. Exercise 1
One day, Mum makes a cake. She cuts of the whole for Tim, and Tim eats of this part. How much does he eat?

6. Exercise 2
Calculate:

7. 2 × 1 = 2 1 5 4 5×2 4×1 = 5 2 multiplying the numerators
multiplying the denominators

8. Exercise 3
Calculate:

9. Read and Think:
When you multiply by a fraction, does the answer become bigger or smaller? Why?

10. ＝ Using the following table, can you get to the conclusion?
Can you tell me why?

11. Fill in the with “＞”“＜”or“＝”without calculating:

12. Now, Do you know how to multiply fractions by fractions?