Use equal multiplicative steps across both lines.
notebooks124___dollars361215
Linked scale factors · grades 6–7
Double Number Line Worksheet Generator
Use two aligned number lines to show equal multiplicative steps. One exact value is hidden in each generated item so students have to preserve the relationship across both lines.
Live worksheet preview
Double Number Lines
Double number lines · Small whole numbers · Seed 261501
Use equal multiplicative steps across both lines.
notebooks1245dollars5___2025
Use equal multiplicative steps across both lines.
hours1___45miles6122430
Use equal multiplicative steps across both lines.
hours1245miles61224___
Use equal multiplicative steps across both lines.
minutes1245pages248___
Use equal multiplicative steps across both lines.
notebooks1235dollars24___10
Use equal multiplicative steps across both lines.
minutes1___45pages6122430
Use equal multiplicative steps across both lines.
notebooks1245dollars6___2430
Use equal multiplicative steps across both lines.
hours134___miles26810
Use equal multiplicative steps across both lines.
notebooks1___34dollars5101520
No fake precision: tables, graph points, equations, and double number lines come from the same exact whole-number constant of proportionality. Better Buy problems compare integer cents per item, so a winner is never chosen from a rounded display value.
Teaching note 1
Each matching tick pair represents the same scale factor.
Teaching note 2
Move by multiplication or division, not only by repeated addition.
Teaching note 3
Check a completed value against the constant rate between the two lines.
Move among tables, equations, graphs, double number lines, and Better Buy decisions in one exact generator.
Return to ratio foundations →Practice simplified ratios, equivalent tables, unit rates, proportions, and percent proportions.
Frequently asked questions
Are double number lines only for unit rates?
No. They are useful whenever two quantities scale together proportionally.
How is the missing value selected?
The generator hides one non-first position on either the top or bottom line, while preserving a whole-number relationship.