Numbers in expanded form

The  exercise appears under the 4th grade (U.S.) Math Mission. This exercise practices viewing numbers in expanded form.

Types of problems
There are two types of problems in this exercise:
 * 1) What is the resulting number when you add _____ to ___ ?: This problem asks the student to find the result when they add ____ (example: 5 hundreds) to a number.
 * 2) Which expression is equivalent to ___ ?: This problem has a number and user is asked to find an expression that is equivalent to it.

Strategies
Basic knowledge of addition is required for this exercise.
 * 1) When user is finding the resulting number, they can also put the number a place value chart.