Transcript Decimal Place Value with Base Ten Blocks and Grids

Decimal Place
Value with Base
Ten Blocks and
Grids
Base Ten Pieces
• Units = ones
• Rods = tens
• Flat = hundreds
Use rods to cover a flat
•How many rods did you use to cover
the flat?
•If a flat represents 1 whole, then what
fraction does one rod represent?
•What fraction of the flat is 7 rods?
•What fraction of the flat is 4 rods?
•What decimal number is represented
by 10 rods?
•What decimal number is represented
by 1 flat and 5 rods?
•How many tenths are in two wholes?
•How would you write 20 tenths using
decimal notation?
•How many small squares are in a flat?
•Which base ten piece would you use to
show one hundredth? Why?
•How many hundredths does a rod
represent?
•How would you write 10 hundredths using
decimal notation?
•Do 0.10 and 0.1 represent the same
number?
•Explain why 0.10 and 0.1 represent the
same number using the base ten
blocks.
Write the number that represents
3 flats, 5 rods, and 7 units using
decimal notation.
3.57
Write the number that represents 2
flats, 4 rods, and 1 unit using
decimal notation.
2.41
Arrange your base ten
blocks to show 2.34
Arrange your base ten
blocks to show 1.05
Find sheet “Day 14 Base Ten Grids”
Find Grid A
•How many small squares are on this grid?
•What fraction of the grid does each small square
represent?
•What is the decimal representation for each small
square?
•What is the decimal representation for each row or
each column?
•Shade 2 columns and 4 small squares, what decimal
have we represented?
Find in your notebook, “Day 14, Blank
Base Ten Grids A”
Use the Blank Grids to shade each of the
following decimals!!
Example: 1.82 – You would shade one whole grid
PLUS 8 columns and 2 squares
1.05
2.57
1.97
0.84
0.04
2.67
Find sheet “Day 14 Base Ten Grids”
AGAIN
Look at Grid B
•How many tiny rectangles are on this grid?
•What fraction of the grid does each tiny rectangle
represent?
•How do you think we might represent this number
using decimal notation?
•What do you think this place value is called? Why?
•Shade 2 rows, 8 small squares, and 9 tiny
rectangles, what decimal have I represented?
Find in your notebook, “Day 14, Blank
Base Ten Grids B”
Use the Blank Grids to shade each of
the following decimals!!
Example: 1.823 – You would shade one whole grid PLUS
8 rows, 2 small squares, and 3 tiny rectangles
0.647
2.418
0.749
1.437
1.503
2.376
Homework :)
Day 14, “Decimal
Place Value Practice