How do you read this number:1323.83?

In this lesson you will learn how to read and write

decimals by using base ten blocks.

Let’s Review

Decimals help us see parts of a whole.

$20.68

Core Lesson

1 0.10

0.01

Core Lesson

Ones Tenths Hundredths

1and 1 and 0.5 and 0.03

1 whole 5 tenths 3 hundredths

5 3

“and

”

Core Lesson

5 tenths3 hundredths

0.53

Core Lesson

1 whole 31 hundredths

1.31

Core Lesson

8.22

Core Lesson

0 tenths9 hundredths

0.09

A Common MisunderstandingThinking that there is only one size whole that

never changes….

Ones Tenths Hundredths

and 1 and 0.5 and 0.03

1 whole 5 tenths 3 hundredthsOnes Tenths Hundredths Thousandths

5 tenths 3 hundredths 3 thousandths

1.533

Core Lesson

4 hundredths2 tenths 5 thousandths

1.245

1

In this lesson you have learned how to read and write

decimals by using base tens blocks.