Fun Math Kids

Smart Starters · Ages 8 to 10

All Smart Starters games

Mixed Number Speed Dash

Race between frozen research stations by adding and subtracting mixed numbers against a friendly timer, for ages 8 to 10.

SpeedMixed numbers addition and subtraction~1 min per level5 levelsAll devices
  • Free · no account required
  • COPPA compliant
  • +10 XP per level
  • 5 levels
  • Plays on all devices
  • Curriculum-aligned

The learning journey

Every activity is one step. Here is where this one fits.

  1. Play(you are here)Learn the idea in a game
  2. PractiseLock it in on paper
  3. ReviewCome back and keep it sharp
  4. MasterTake on a harder challenge
  5. AchieveEarn a certificate

About Mixed Number Speed Dash

Mixed Number Speed Dash is an Arctic expedition race where children sprint between frozen research stations by solving mixed-number challenges against a friendly timer. Each correct answer powers the snow vehicle on to the next checkpoint, building speed and confidence with adding and subtracting mixed numbers. It is built for ages 8 to 10 (grade 4 and grade 5) with clear instructions, large touch targets, and gentle pacing, so children can play independently or alongside a parent. Questions use the same denominator family at first and grow toward regrouping a whole, so learners practise converting between improper fractions and mixed numbers as a natural part of play rather than as a worksheet drill. Correct answers bring encouraging sounds, ice-crystal effects, and a small celebration, while mistakes are never punished and simply invite another try, which keeps confidence high. Difficulty grows step by step so the challenge always matches the child, supporting steady, progressive learning across the upper-primary fractions curriculum used in the US, UK, Canada, and Australia. The game runs in any modern browser with no app to install, no sign-up, and no advertising shown to children. Progress is saved only on the device and appears in the Parent Dashboard, so families can follow growth without any data leaving the browser. It pairs well with our Smart Starters fraction worksheets for offline practice of the same skills.

Chosen by the skills this activity practises.

A hand for grown-ups

Before you start
Something you can cut or fold helps enormously — paper, fruit, a sandwich. A half you can see beats a half you are told about.
While they work
Keep coming back to "equal parts". A shape split into unequal bits is the classic fractions trap.
Afterwards
Fold a piece of paper into halves, then quarters, together. Watching the pieces double is a lightbulb moment for many children.
Watch out for
Thinking a bigger bottom number means a bigger fraction (that 1/8 > 1/4). Cutting a real thing into 8 vs 4 pieces settles it fast.
Away from the screen
Cut food into equal parts at mealtimes. Fold paper. Talk about "half" and "quarter" of everyday things.

How to play

  1. A question appears on screen

    An equation with a missing answer — for example "4 + 1 = ?" — is shown in large text. A timer bar starts counting down from 12 seconds.

  2. Tap or press the correct answer

    Four answer options are shown as large buttons. Tap an answer, or press keys 1–4 on the keyboard.

  3. Build your streak

    Each consecutive correct answer increases your streak counter. A streak of 5 or more turns the flame icon orange and awards a streak bonus to your XP for that level.

  4. Complete the level to finish

    Each level has 6 questions. Complete them correctly to earn the full level XP (+10 XP, plus up to +10 XP perfect bonus). Your progress is saved automatically between sessions.

🎓 Curriculum

Curriculum alignment

Mapped to national curriculum frameworks so teachers and parents can match practice to school standards.

  • United StatesCommon Core State Standards for Mathematics · fractions, mixed-numbers, fluencyAligned to fractions, mixed-numbers, fluency number and operations objectives.
  • United KingdomNational Curriculum for England — Maths · fractions, mixed-numbers, fluencyAligned to fractions, mixed-numbers, fluency number and operations objectives.
  • AustraliaAustralian Curriculum v9.0 — Mathematics · fractions, mixed-numbers, fluencyAligned to fractions, mixed-numbers, fluency number and operations objectives.
  • CanadaPan-Canadian Provincial Standards · fractions, mixed-numbers, fluencyAligned to fractions, mixed-numbers, fluency number and operations objectives.
❓ FAQ

Frequently Asked Questions

  • It is designed for children aged 8 to 10 (grade 4 and grade 5) and follows the upper-primary fractions curriculum.

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