CH01-03 lesson

Reading and Writing Decimals to Thousandths Learning Activity

A focused Grade 5 learning session for Reading and Writing Decimals to Thousandths using visual models, worked examples, strategy guidance, and a short mastery check.

15
minutes
6
lesson parts
11
practice items
Learning goal

Students will read, write, and represent decimals to thousandths in standard, word, and expanded form.

Student goal: I can read and write decimals to thousandths.

concept

Learn the Idea

Reading and Writing Decimals to Thousandths is the Grade 5 skill of students read and write decimals to thousandths using base-ten numerals, number names, and expanded form. For example, they write 347.392 as 3 × 100 + 4 × 10 + 7 × 1 + 3 × (1/10) + 9 × (1/100) + 2 × (1/1000).

Which place values matter most, and how does the decimal point guide the work?

Strong understanding comes from naming what the numbers, shapes, units, or data values represent, then showing the idea with a model or clear steps before solving.

The key to this topic is understanding the structure behind the work, not just following a rule. Students should be able to talk through what is happening, point to a model, and explain why the answer makes sense.

  • Name the place of each important digit before comparing or computing.
  • Use place value patterns to explain what happens when values shift.
  • Estimate first so the final answer can be checked for reasonableness.
  • Use the topic language from class discussions: Students read and write decimals to thousandths using base-ten numerals, number names, and expanded form. For example, they write 347.392 as 3 × 100 + 4 × 10 + 7 × 1 + 3 × (1/10) + 9 × (1/100) + 2 × (1/1000).
visual model

See the Math

Visual Model 1

Question: Place-value chart: identify the digit in the hundredths place for 5.726.

OnesTenthsHundredthsThousandths
5726
  • A. 5
  • B. 7
  • C. 2
  • D. 6

How the model helps: The digit 2 is in the hundredths place (the second position to the right of the decimal point).

worked example

Follow a Worked Example

Example 1

Question: Place-value chart for 12.6: identify the tenths digit.

TensOnesTenthsHundredths
1260
  • A. 1
  • B. 2
  • C. 6
  • D. 0
  1. The tenths place is the first position after the decimal point.
  2. In 12.6, the tenths digit is 6.

Answer: 6

Example 2

Question: Decimal grid with 67 shaded squares (out of 100). What is the decimal?

Grade 5 Reading and Writing Decimals to Thousandths figure 2

  • A. 0.76
  • B. 67
  • C. 6.7
  • D. 0.67
  1. 67 out of 100 squares shaded represents \(\frac{67}{100} = 0.67\).

Answer: 0.67

real world

Connect It to a Real Situation

Problem 1

Question: Write the decimal 0.47 as a fraction.

  • A. \(\frac{47}{100}\)
  • B. \(\frac{47}{10}\)
  • C. \(\frac{4}{7}\)
  • D. \(\frac{47}{1000}\)

Answer: \(\frac{47}{100}\)

Why it works: The decimal 0.47 has two digits after the decimal point, so it represents 47 hundredths: \(0.47 = \frac{47}{100}\).

strategy

Avoid Mistakes and Choose a Strategy

  • Starting the computation before identifying what the numbers, units, or parts represent.
  • Ignoring place value by lining up digits incorrectly instead of aligning decimal points or decimal places.
  • Forgetting to estimate, which makes it easier to miss an unreasonable answer.
  • Stopping at a number without explaining what the answer means in context.
  • Read the situation slowly and name what each number or label represents.
  • Use place value charts or aligned digits to keep the decimal meaning clear.
  • Estimate first so you already know the answer's approximate size.
  • Check the answer with an inverse operation, another representation, or a sentence explanation.
  • Say the math idea out loud in simple words before writing the final answer.
summary

Remember the Key Idea

Reading and Writing Decimals to Thousandths gets easier when students read the model, track what each number means, and explain why the answer fits the situation.

GOLDEN RULE

Name the place value first, then compute or compare with aligned digits.

Guided to independent practice

Solve before opening the answer

Use scratch paper. The explanation matters more than simply seeing whether the choice is correct.

warmup

2 questions
G5-C02-T03-Q001 About 1 min

Write the decimal 0.47 as a fraction.

  1. A \(\frac{47}{100}\)
  2. B \(\frac{47}{10}\)
  3. C \(\frac{4}{7}\)
  4. D \(\frac{47}{1000}\)
Check answer and explanation

Answer A: \(\frac{47}{100}\)

The decimal 0.47 has two digits after the decimal point, so it represents 47 hundredths: \(0.47 = \frac{47}{100}\).

G5-C02-T03-Q002 About 1 min

What is the word form of 0.63?

  1. A Zero point sixty-three
  2. B Sixty-three hundredths
  3. C Zero and sixty-three hundredths
  4. D Sixty-three tenths
Check answer and explanation

Answer B: Sixty-three hundredths

The decimal 0.63 is read as "sixty-three hundredths" because there are two decimal places (hundredths position). Avoid using "point" or "and" when reading decimals less than 1.

guided

1 question
G5-C02-T03-Q003 About 1 min

Which decimal is equivalent to \(\frac{8}{10}\)?

  1. A 0.08
  2. B 0.8
  3. C 8.0
  4. D 0.008
Check answer and explanation

Answer B: 0.8

A fraction with denominator 10 equals a decimal with one place: \(\frac{8}{10} = 0.8\).

practice

5 questions
G5-C02-T03-Q004 About 1 min

Write the expanded form of 2.34 using place values.

  1. A \(2 + 3 + 4\)
  2. B \(20 + 30 + 4\)
  3. C \(2 + 0.03 + 0.4\)
  4. D \(2 + 0.3 + 0.04\)
Check answer and explanation

Answer D: \(2 + 0.3 + 0.04\)

In the decimal 2.34, the 3 is in the tenths place (0.3) and the 4 is in the hundredths place (0.04). So \(2.34 = 2 + 0.3 + 0.04\).

G5-C02-T03-Q005 About 1 min

Place-value chart: identify the digit in the hundredths place for 5.726.

Reading and Writing Decimals visual for G5-C02-T03-Q005
  1. A 5
  2. B 7
  3. C 2
  4. D 6
Check answer and explanation

Answer C: 2

The digit 2 is in the hundredths place (the second position to the right of the decimal point).

G5-C02-T03-Q006 About 1 min

Which word form correctly reads 0.09?

  1. A Zero point zero nine
  2. B Nine tenths
  3. C Nine hundredths
  4. D Zero point nine
Check answer and explanation

Answer C: Nine hundredths

The decimal 0.09 has a 0 in the tenths place and a 9 in the hundredths place, so it reads as "nine hundredths".

G5-C02-T03-Q007 About 1 min

Expanded form with fractions: write \(3 + \frac{5}{10} + \frac{2}{100}\) as a decimal.

  1. A 3.52
  2. B 3.25
  3. C 35.2
  4. D 0.352
Check answer and explanation

Answer A: 3.52

\(\frac{5}{10} = 0.5\) (tenths place) and \(\frac{2}{100} = 0.02\) (hundredths place), so \(3 + 0.5 + 0.02 = 3.52\).

G5-C02-T03-Q008 About 1 min

Decimal-grid visual: a 10 × 10 grid with 43 squares shaded. Write the decimal.

Reading and Writing Decimals visual for G5-C02-T03-Q008
  1. A 0.43
  2. B 0.34
  3. C 4.3
  4. D 43
Check answer and explanation

Answer A: 0.43

43 out of 100 squares shaded represents \(\frac{43}{100} = 0.43\).

exit

3 questions
G5-C02-T03-Q009 About 1 min

What is 1.5 in expanded form using addition?

  1. A \(1 + 5\)
  2. B \(1 + 0.5\)
  3. C \(1 + 0.05\)
  4. D \(10 + 5\)
Check answer and explanation

Answer B: \(1 + 0.5\)

The 5 is in the tenths place, so \(1.5 = 1 + 0.5\).

G5-C02-T03-Q010 About 1 min

Which decimal corresponds to the word form "seven and twenty-four hundredths"?

  1. A 7.24
  2. B 7.024
  3. C 7.204
  4. D 72.4
Check answer and explanation

Answer A: 7.24

"Seven and twenty-four hundredths" means 7 whole units and 24 hundredths: 7.24.

G5-C02-T03-Q011 About 1 min

Place-value chart for 12.6: identify the tenths digit.

Reading and Writing Decimals visual for G5-C02-T03-Q011
  1. A 1
  2. B 2
  3. C 6
  4. D 0
Check answer and explanation

Answer C: 6

The tenths place is the first position after the decimal point. In 12.6, the tenths digit is 6.

Page UP