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Multiplying
Whole Numbers
Performance Task Objectives
- Multiply up to 5-digit numbers
by 1-digit numbers
- Multiply two 2-digit numbers
- Find the areas of rectangles
and squares
- Estimate products
Sunshine State Standards
Materials
- Student recording sheet
- Color tiles
- Paper and pencil
Student arrangement
- Individual or small group
Task
- Present the problem on the
student Recording Sheet to your students.
Performance Criteria
- Can the student explain
how he or she estimated the number of tiles needed?
- Can the student correctly
determine the area of the individual floors and the entire building?
- Can the student correctly
determine the cost of the tiles for one kitchen floor and the entire
building?
Definition:
A 4-story apartment building has 15 apartments on each floor. The kitchen
floors are being redone with new tile. The dimensions of the floor space
to be tiled are 6 feet long by 4 feet wide. Ted, the tile man, has 1,500
one-foot square tiles.
ESTIMATION
Explain how you would estimate whether Ted has enough tiles to
cover all the kitchen floors in the entire apartment building.
SOLVE THESE PROBLEMS
Answer the following questions by finding the exact answer.
1. How many tiles, each measuring 1 square foot, are needed to cover one
kitchen floor? Show your work.
2. How many tiles are needed
to cover all the kitchen floors in the entire 4-story apartment building?
Show your work.
3. If tiles cost $0.82 each,
how much will it cost to tile one kitchen floor? Show your work.
4. How much will it cost for
the tiles for the whole building? Show your work.
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