Rainfall Investigation Answer Key

Rainfall Investigation helps students use a small data table to solve decimal word problems about weekly rainfall. Students read the rainfall measurements, add and subtract values, find a total, calculate an average, determine how much more rain is needed, and solve equal-sharing questions. The worksheet strengthens decimal operations, data-table interpretation, averages, measurement, multi-step reasoning, subtraction, addition, and division. It is especially appropriate for students in grades 5-6 who are ready to combine decimal computation with science-style data analysis.

Targeted Skills

• Read decimal data: Students accurately locate weekly rainfall measurements in a table.
• Find totals and differences: Learners add rainfall amounts and compare weeks using subtraction.
• Calculate an average: Students add all weekly values and divide by the number of weeks.
• Solve applied questions: Children determine missing rainfall, equal container amounts, evaporation, and comparison totals.

Instructional Support

• Connects math and science: Students use decimal operations with realistic rainfall measurements.
• Builds data literacy: Learners must choose the correct values from the table before calculating.
• Supports parent guidance: Adults can ask, “Which weeks or measurements does the question tell us to use?”
• Encourages multi-step thinking: Several questions require students to find a total before completing another operation.
• No-prep design: The chart and questions are ready for classroom or homeschool use.

Data tables require students to do more than simply calculate because they must first identify which numbers matter. In this worksheet, learners use rainfall measurements to find combined amounts, compare weeks, calculate an average, and determine how much rain remains after evaporation or how much more is needed. This helps students connect decimal addition, subtraction, division, measurement, data reading, and reasoning in one meaningful activity. As they work, learners strengthen scientific numeracy, place-value accuracy, problem-solving fluency, unit awareness, and confidence. In classroom and homeschool settings, the worksheet reinforces the idea that decimals are important for interpreting real measurements and drawing useful conclusions from data.