Warm Up

• The school play is going to be held in the auditorium that will hold 200 people. Gina sold 36 adult tickets to the play. She sold 4 times as many student tickets as adult tickets. How many student tickets did Gina sell? How many more tickets can Gina sell so everyone can fit in the school auditorium?

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.

3.57Write 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 15 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 15, Blank Base Ten Grids A”

Use the Blank Grids to shade each of the following decimals!!

1.05 0.842.57 0.041.97 2.67

Example: 1.82 – You would shade one whole grid PLUS 8 columns and 2 squares

Find sheet “Day 15 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 15, 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 1.4372.418 1.5030.749 2.376