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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 feetfor 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.
