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Random Addingby Melirate

Round setup

Choose round settings

Adjust the number range, optional total cap, and timed-round length before playing.

Available locallyJourney guide

Before you start

  • Open the setup screen. Settings are kept in this browser when local storage is available.

Steps

  1. Set the addend maximums

    Edit either displayed maximum directly. Each active addend accepts a whole number from 0 to 999. Use + to add a third maximum, which starts at 10; use − to remove it.

    Open the Setup: two or three addends guide

  2. Optionally cap the sum

    Enter a nonnegative whole number in Max total (optional). Leave it blank for No limit. Invalid text is explained inline and keeps Play now disabled until corrected.

    Open the Setup: optional total cap guide

  3. Choose a duration

    Adjust the minutes and seconds wheels. The default 0:60 means 60 seconds. Round lengths must total from 5 seconds to 10 minutes; a seconds selection of 60 rolls into the next minute when possible.

    Open the Setup: duration wheels guide

  4. Start when the settings are valid

    Play now uses the current valid settings. A very small question pool may show a note, but one-problem configurations are allowed.

    Open the Setup: a small problem pool guide

What to expect

  • The equation preview reflects two or three addends.
  • Personal-best comparisons are kept separate for different settings.

Other paths

Visual guide

Recorded walkthrough

Walkthrough recording · 6 sec

These are silent local synthetic preview captures. Account clips and screenshots show the unconfigured guest preview, not the locally prepared member flow. Some demos use 5-, 15-, or 20-second timers; private invitation details are hidden. If playback is unavailable, use the captions when present or read the full transcript below.

Read the full recording transcript

The default is two addend maximums of 10, no total limit, and one minute.

The plus control adds a third number. Set each maximum and use the optional total field if the sum needs a limit.

Focus a minutes or seconds wheel and use the arrow keys, or scroll or swipe the wheel. This demo uses a short timer.

Annotated screens

Each numbered note names the control or state marked on the screen.

Actual three-addend configuration with individual maxima, an optional total cap, and 0:05 short demo duration.View full-size original annotated screen (new tab)
Annotated Random Adding screen.

What the numbered markers show

Actual inline validation after entering a total above the safe integer limit; Play now is disabled.View full-size original annotated screen (new tab)
Annotated Random Adding screen.

What the numbered markers show

Actual duration wheel state after focusing the seconds wheel and selecting a short five-second demo round.View full-size original annotated screen (new tab)
Annotated Random Adding screen.

What the numbered markers show

Actual setup warning for the four-problem pool allowed by 1 + 1 maximum addends.View full-size original annotated screen (new tab)
Annotated Random Adding screen.

What the numbered markers show