Groups of ten objects

The first instance of the Groups of tens exercise is under the Early Math Math Mission. This exercise involves intense practice on just the multiples of tens. It reinforces the number of groups of ten that go into making the multiples of ten.

Types of problems
There are three types of problems that show up in this exercise:
 * 1) Context groups of tens: This problem takes a word problem situation, often a problem with packing, and asks the student to determine how many groups of ten they have with a certain given number. They need to enter the number of groups of ten, and the number of containers or crates they will need in the word problem.Gp-1.png
 * 2) Type groups of ten: This is purely numerical. It asks the students how many groups of ten are in a given multiple of ten.Gp-2.png
 * 3) How many  groups of how many: This problem describes two collections that are the same size. The student is then asked to split the first into groups of ten, and the second asks how big they should make a group to attain a certain number of groups.Gp-3.png

Strategies
These problems are straightforward and concentrate on such a narrow collection of numbers that it is easy to get both accuracy and efficiency badges on them.


 * 1) On the first problem, the size of the "crates" is always ten. Therefore you can just read how many objects you have in the second sentence and that will give you the 1-digit number that will be the answer to both blanks.
 * 2) On the second problem, the tens digit is the answer to how many groups of ten you need to make the multiple of ten.
 * 3) On the third problem, the first slot will always be the tens digit of the number you are working with and the second slot is always filled in with ten.
 * 4) On the third problem, the numbers you can read in the questions just need to be transferred up and down into the slots since the two collections are actually the same size.