Juana, the friendly witch, has 5 broomsticks in her garage. She removes the broomsticks one by one without moving the others. Which broomstick will Juana take at last?

How many points did she get the third time?

How many times your own right hand appears in the picture?

Ms Thuy cuts a rope in three equal pieces and then made some equal knots with them. Which figure shows correctly the three pieces with the knots?

A student had some sticks of length 5 cm and width 1 cm. With the sticks he constructed the fence below. What is the length of the fence?

Ms Thuy glued 4-ray stars like this. At least, how many stars did she use ?

 $35\times5+65\times5=?$  

In the number triangle shown, every number not on the bottom row is equal to the sum of the two numbers below it.

What is the number represented by the “?” mark?

Thu sum of 4 consecutive even numbers is 44. What is the smallest number among the four numbers ?