<%@LANGUAGE=VBScript%> Math Matters Level 4 - Chapter 1- Lesson 1
 
 

How tall are the buildings?

Each floor of a building is approximately 10 feet. The building in the picture on the far left has 9 floors. We can count by tens to get 90 feet for the height of this building. Now, let’s estimate the height of the shortest building. To do this we simply count 4 floors or 40 feet. Look at the tallest building. Did you count 14 floors? That would make the tallest building 140 feet. The last two buildings are about the same height, at 11 floors each, How tall are the buildings? If you said about 110 feet, YOU’RE RIGHT!

Here are some photos of actual buildings, use the method from the example above to estimate how tall they are.



EXERCISES
Type your answer in the space provided.
1. Figure A shows a one story house. Using tens, estimate the height of the house. For this house, don’t forget to add about 10 feet for the roof. Figure A feet
2. Figure B is a picture of a bank building. Using tens, estimate the height of the building. Figure B feet
3. Figure C is a picture of a hotel building. Using tens, estimate the height of the building. Again, add about 10 feet for the roof. Figure C feet
4. Figure D is a picture of a large office building. Using tens, estimate the height of the building. Figure D feet


Use pencil and paper to answer the following.
A box is filled with about 20 hotwheel cars.
5. If the box was only half filled, how many cars would there be in the box?
6. About how many cars would there be in two boxes?
7. About how many cars would there be in three boxes?
Estimate
8. How many tens can you fit into the number 73?
9. How many tens can you fit into the number 122?
10. How many tens can you fit into the number 1001?

Fill a small glass with dry beans or your favorite round breakfast cereal. Take out 10 items and place on the side. Estimate the total number of items you have. Repeat this process, taking out 10 items and then estimating the total every time you take out another 10 items.
 

Hint: See how soon you can estimate how many more sets of ten are left in the glass. Use a small spoon to help you take out groups of ten easier and faster.

REVIEW
Type your answer in the space provided.
Type the sum of the following addends.
1. 10 + 10 + 10 + 10 + 3 =
2. 10 + 10 + 6 =
3. 10 + 10 + 10 + 10 + 10 + 5 =
4. 5 + 5 + 5 + 5 + 2 =
5. 100 + 10 + 1 =

 

 

   
   
   
   

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