Decimals | Review Lesson
A 75-minute college-level review lesson on decimals focused on place value, conversion, rounding, comparison, and operations. Students will revisit core decimal skills through brief instruction, guided practice, and mixed review tasks.
| Term | Definition |
|---|---|
| Place value | The value of a digit based on its position in a number. |
| Decimal point | The symbol used to separate the whole number part from the fractional part of a number. |
| Tenths | The first place to the right of the decimal point. |
| Hundredths | The second place to the right of the decimal point. |
| Rounding | Approximating a number to a chosen place value. |
| Equivalent | Having the same value, even if written differently. |
| Estimate | A close but not exact answer. |
Display 4–5 rapid review questions on place value, comparison, and rounding. Model one example if needed, then have students respond individually.
Answer the warm-up questions independently, then briefly compare answers with a partner.
Review place value, comparison using digits and zeros, and rounding rules. Highlight common errors such as misreading zeros or moving the decimal incorrectly.
Take notes, ask clarifying questions, and complete a few guided examples with the teacher.
Work through 3–4 problems involving addition, subtraction, multiplication, and division of decimals. Emphasize alignment, estimation, and checking reasonableness.
Solve each problem with the class, show work, and explain reasoning when called on.
Assign a mixed set of decimal review problems covering conversions, operations, and word problems. Circulate to support and correct misconceptions.
Work in pairs to solve the problems, compare strategies, and justify answers.
Provide a short independent set or choose the most missed problems from earlier work for focused practice.
Complete the problems individually and check work against notes or examples.
Ask students to identify one decimal skill they feel confident with and one they still need to review. Restate the main strategies from the lesson.
Share one takeaway verbally or in writing and submit a brief exit response.
Reinforce the key idea that decimal success depends on strong place value understanding, careful alignment, and checking reasonableness. End by asking students to name one strategy they will use on future decimal problems.