rounding decimals worksheets

Teaching Notes

Focus: Rounding Decimals. 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

1. Locate the requested place.
2. Inspect the digit immediately to its right.
3. If that digit is 5 or greater, increase the requested digit by 1; otherwise keep it.
4. Remove decimal places to the right of the requested place.

Worked Examples

Round 1.17 to the nearest tenth.

1. The tenths digit is 1.
2. The hundredths digit is 7, so increase the tenths digit by 1.
3. Remove the hundredths digit.

Answer: 1.2

Common Mistakes and How to Help

The answer does not match the requested form or place.

Return to the worked example. Ask the learner to explain each step and check the result against the original question.

Questions to Check Understanding

• What does each number in this example represent?
• Why does the final answer have this form?
• Can you explain the same steps using another example?

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.