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Zlomko

Free

Web app · runs in your browser, nothing to download

Education

Zlomko is an educational web app designed for children in grades 4-6 to practice fractions and decimals. It offers visual, interactive rounds with varying topics and modes, including calm and timed options. Users can practice concepts like equivalent fractions, comparing fractions, and position on a number line.

Catalogued January 1, 2026 · Curated by Web Apps Directory team
Online Only
Installable
Cross-Platform
Free
Tags
fractionsdecimalsmath-practiceelementary-schoolinteractive-learningfree-to-usevisual-math

Bonus: install Zlomko from your browser

Chrome / Edge
Menu (⋮) → Add to Home screen
Safari (iOS)
Share (↑) → Add to Home Screen
Firefox
Menu (⋮) → Install

Why we recommend Zlomko

Zlomko earns a recommendation for its focused approach to teaching fractions and decimals to children. It provides 'short visual rounds' and 'five varied questions' to maintain engagement. Users can choose between 'Calm mode with no timer' or timed challenges, catering to different learning paces. The app helps children understand core concepts such as 'Part of a whole,' 'Same value' for equivalent fractions, and 'Position on the line' using a number line. Its 'no account or ads' policy creates a clean, distraction-free learning environment, and the ability to 'Continue where you left off' supports ongoing practice. The 'Daily challenge' offers a consistent learning opportunity.

Best use cases

Best for: Elementary school students (ages 9-12, grades 4-6) needing interactive practice with fractions and decimals. It's ideal for supplementing classroom learning, for parents seeking a free, ad-free tool to help children grasp math concepts, or for children who benefit from visual aids and a choice between calm or timed practice modes. It's also suitable for practicing specific topics like equivalent fractions or positioning numbers on a number line.

Honest limitations

Zlomko is not designed for advanced mathematics or for users outside its target educational level (4th-6th grade). While it offers multiple languages, the primary content and manifest are in Czech, which may require translation for some users. The app focuses specifically on fractions and decimals and does not cover a broader range of mathematical topics. It also explicitly states 'No answers, score, time, name or custom ID' for anonymous usage, which means detailed individual performance tracking is limited.

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