# Place Value of Decimal Numbers to Thousandths

Activity: Discover decimal values for squares and cubes with an orange rod as the unit.

Let one orange cube = 1If an orange cube = 1, then one square =

If an orange cube = 1, then one orange rod =

If an orange cube = 1, then one white cube =

Solve problems like the following:8 orange squares, 3 orange rods, and 4 white cubes

3 orange cubes and 2 white cubes

3 orange cubes, 2 oranges squares, 6 orange rods, and 5 white cubes

8 orange squares, 5 orange rods, and 6 white cubes

6 orange squares and 7 white cubes

9 white cubes

4 orange cubes, 2 white rods, and 5 white cubes

How many cubes, squares, and rods are needed to represent the following numerals?1.23

1.25

.789

1.05

.001

Dr. Robert Sweetland's Notes ©