What are 'Control Exercises' and how to use them?

In the figure, parts of the hundred field are given. Count and complete them.

Which numbers are:

• 93

• 63

• 90

• 84

• 60

Sort the given numbers:

Perform the following operations.

In each addition, use each given digit only once and get the given sum.

Complete and fill in.

Analyze the figure. Express the part of the squares colored the same with an equation using multiplication.

Use each of the given digits exactly once and complete the equations:

Use each of the given digits exactly once and complete the equations: 28, 3, 33, 6, 72, 7, : = 4, : = 11, : = 12