Exploring Decimal Place Value and Addition Misconceptions

Maria Miller introduces decimals as fractions, focusing on tenths and hundredths. She explains how to read and write decimals, addresses common student errors, and demonstrates techniques for adding decimals using place value charts and number lines.

What fraction does the decimal 0.9 represent?

• 90/100

• 0.09

• 9/10

• 9/100

Tags

CCSS.4.NF.C.6

How can 0.31 be expressed in terms of hundredths?

• 310/1000

• 3/10

• 3/100

• 31/100

Tags

CCSS.4.NF.C.6

How is the decimal 0.56 expressed as a fraction?

• 56/100

• 5/6

• 0.56/100

• 56/10

Tags

CCSS.4.NF.C.6

What is the simplified form of 5.40 as a mixed number?

• 5 and 4/10

• 5.4

• 54/10

• 5 and 40/100

Tags

CCSS.4.NF.C.6

What is the correct sum of 0.4 and 0.7 using a number line?

• 1.1

• 0.11

• 1.10

• 1.01

Tags

CCSS.1.NBT.C.4

CCSS.2.MD.B.6

What is the correct representation of 8 and 7/10 as a decimal?

• 8.07

• 87.0

• 8.7

• 0.87

Tags

CCSS.4.NF.C.6

If a decimal ends with a zero, like 0.20, does it change the value?

• Yes, it decreases

• No, it remains the same

• Yes, it increases

• It becomes zero

Tags

CCSS.4.NF.C.7

Does adding a zero to the right of the decimal 0.2 change its value?

• Yes, it becomes two

• No, it stays the same

• Yes, it doubles

• Yes, it halves

Tags

CCSS.5.NBT.B.7

What is the result of adding 0.31 and 0.05?

• 0.035

• 0.36

• 0.306

• 3.6

Tags

CCSS.6.NS.B.3

What is the sum of 0.3 and 0.05 when aligned properly?

• 3.5

• 0.8

• 0.305

• 0.35

Tags

CCSS.5.NBT.B.7