Correct the Place Value in the Result
Focus: Estimating Decimal Results. 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: Estimating Decimal Results. Use the worked example and teaching sequence below to explain the reasoning before independent practice.
Before You Begin
- Identify the requested place.
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.
- Find the digit in the requested place.
- Look one place to the right: 5 or more rounds up; less than 5 rounds down.
- Replace lower whole-number places with zeros, or remove unneeded decimal places.
Worked Examples
Round 347 to the nearest ten.
- The tens digit is 4.
- The ones digit is 7, so round up to the next ten.
Answer: 350
Common Mistakes and How to Help
Do not round repeatedly from the last digit; inspect the digit immediately right of the requested place.
Is 347 closer to 340 or 350?
Questions to Check Understanding
- Is 347 closer to 340 or 350?
- 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.