Correct the Place Value Alignment
Focus: Aligning Decimal Points and Places. Use the worked example and teaching sequence below to explain the reasoning before independent practice.
Use New Numbers to make another set. Choose Worksheet or Answer Key, then use the worksheet’s Print button.
Teaching Notes
Focus: Aligning Decimal Points and Places. Use the worked example and teaching sequence below to explain the reasoning before independent practice.
Before You Begin
- Read decimal place values.
Teaching Steps for Parents and Teachers
- For an error-correction problem, find the first incorrect step. Explain why it is wrong, then recompute all later steps.
- Zeros at the end of the decimal part do not change the value.
- Use extra trailing zeros to align places.
- Compare values rather than the number of digits.
Worked Examples
Compare 0.5 and 0.50.
- 0.5 is 5 tenths.
- 5 tenths = 50 hundredths.
Answer: 0.5 = 0.50
Common Mistakes and How to Help
A zero inserted inside a number can change its value; only trailing decimal zeros work this way.
Can you write both numbers as hundredths?
Questions to Check Understanding
- Can you write both numbers as hundredths?
- Which step explains your answer?
- Can you apply the same reasoning when the numbers change?
Practice Advice
Work through the example together. Ask the learner to explain the first two problems, then try three independently. Review the first incorrect step before assigning more practice.
Next Practice
- Use New Numbers to practice the same skill with different values.
- If the learner needs help, return to the example and model each step before trying again.