Number Lines: Ratios and Percents [TEKS Tools Grade 7]

This post specifically looks at how number lines can be used solve problems involving ratios and percents. Read more about TEKS Tools and their rationale here.

Number Lines

Number lines account for around 30% of each 7th grade STAAR test. These number lines are applied to solve problems related to ratios, rates, percents, scale, and operations.

The main function of a number line is to solve problems involving operations, understand ratios, rates, and proportionality, or as a tool to explore scale and percent increase/decrease. By visualizing these quantities on number lines, students can better make sense of the how the quantities are related.

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Ratios and Rates

7.4D - solve problems involving ratios, rates, and percents, including multi-step problems involving percent increase and percent decrease, and financial literacy problems

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2023-1: a ratio and the total wer given, students had to find the part

2024-37: a ratio and part were given, students had to find another part and the total

2025-38: a rate was given, students had to find a different amount with the rate

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Percents

7.4D - solve problems involving ratios, rates, and percents, including multi-step problems involving percent increase and percent decrease, and financial literacy problems

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2023-21: a total, part, and rate were given, students had to find the percent increase

2024-20: a total and a percent decrease were given, students had to find the new total

2025-7: a total and new total were given, students had to find the percent increase

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7.6G - solve problems using data represented in bar graphs, dot plots, and circle graphs, including part-to-whole and part-to-part comparisons and equivalents

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2023-12: a graph was given, students had to find a percentage of the total

2023-28: a graph was given, students had to use percents to find the parts

2024-11: a graph was given, students had to use percents to compare the parts

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7.13B - identify the components of a personal budget, including income; planned savings for college, retirement, and emergencies; taxes; and fixed and variable expenses, and calculate what percentage each category comprises of the total budget

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2023-5: a budget was given, students had to find parts more than a certain percentage

2025-27: a budget was given, students had to compare parts