Writing and Reading Decimals

Reading and Writing Decimals Review

Reading Decimals

• The least place value tells us how to read the decimal

• Look at:    1.927

• Because there is a 7 in the thousandths place, we read this decimal as one and nine hundred twenty-seven thousandths

Multiple Choice

How would you read 1.067

• one and sixty-seven thousandths

• one and sixty-seven hundredths

• one point zero six seven

Multiple Choice

Which decimal represents two and two hundred three thousandths?

• 2.023

• 2.203

• 2.23

• 22.3

Expanded Form

• A way to write a number where you can see the value of each digit

• Example: (4 x 1) + (7 x 0.1) + (3 x 0.01) + (2 x 0.001) = 4.732

Multiple Choice

What is (4 x 100) + (8 x 10) + (5 x 0.1) + (6 x 0.001) in standard form?

• 48.56

• 408.56

• 480.506

• 480.560

Multiple Select

How would you write 2.307 in expanded form?

• (2 x 10) + (3 x 1) + (0 x 0.1) + (7 x 0.01)

• (2 x 1) + (3 x 0.1) + (7 x 0.001)

• (2 x 1) + (3 x  $$\frac{1}{10}$$  ) + (7 x  $$\frac{1}{1000}$$  )

• (2 x 1) + (3 x 10) + (7 x 1000)

Mixed number 

• We learned that you can write decimals as mixed numbers

• The whole number goes to the left of the fraction

• The least place value tells us what the denominator will be

• The digits after the decimal tell us what the numerator will be

Multiple Choice

How would you write 3.458 as a mixed number?

• $$3\frac{458}{100}$$

• $$\frac{3458}{1000}$$

• $$3\frac{458}{1000}$$

Multiple Choice

What is 0.341 x $$10^2$$  ?

• 3.41

• 34.1

• 341

• 0.0341

Multiple Select

Which expressions are equivalent to 3.41?

• 0.341

• three and forty-one hundredths

• 3 + $$\frac{4}{10}$$ + $$\frac{1}{100}$$