Reading and Writing Decimals with Base Ten Blocks

What do decimals help us see?

• Whole numbers

• Parts of a whole

• Percentages

• Fractions

What does the flat represent in base 10 blocks?

• One thousandth

• One whole

• One hundredth

• One tenth

How is one tenth written as a decimal?

• 0.01

• 0.1

• 0.001

• 1.0

If the flat is one whole, what decimal number is represented by five tenths and three hundredths?

• 5.03

• 5.3

• 0.53

• 0.35

What decimal is represented by one whole region shaded and then three tenths and one hundredth?

• 1.31

• 0.31

• 1.03

• 1.13

What decimal is represented by eight wholes shaded and then two tenths and two hundredths?

• 8.22

• 8.02

• 8.2

• 8.002

What decimal number is represented by shading nine individual squares?

• 0.09

• 0.9

• 9.0

• 0.009

What is a common misunderstanding when creating decimal numbers?

• There are multiple sizes of wholes

• Decimals are the same as fractions

• There is only one size whole that never changes

• Decimals are always less than one

If the cube is one whole, what does the flat represent?

• One tenth

• One whole

• One hundredth

• One thousandth

How is the decimal 1.245 read?

• One and two hundred forty-five hundredths

• One and two hundred forty-five thousandths

• One and two hundred forty-five tenths

• One and two hundred forty-five wholes