Subtraction Constellation • Learn Subtraction 1

Subtraction Constellation

Learn subtraction 1–100 with joy

Player: ?

Score: 0

Level: 1

Streak: 0

Time: 00:00

High score: 0 — by ?

Shine time!

Steady as the moon

Wish granted!

Press Start or type to begin

Tip: Press Enter to submit. Backspace to delete.

Pencils

How to play

🌟 Answer subtraction questions. Choose minuend/subtrahend from 105 options: the numbers 1–100 plus 100s, 1,000s, 10,000s, 100,000s, and Millions (7 digits). Default selects 1–100.

🌟 Every 5 correct answers increases your level, unlocking larger base numbers and more points. Enjoy a confetti celebration!

🌟 Timer Mode: race the clock per question or for the whole game, or use an infinite stopwatch by entering 0.

🌟 You have 3 pencils. Lose one for each wrong answer. Reach a new high score to celebrate with confetti!

🌟 High score saved on your device (with the name of the champ!)

Choose minuend/subtrahend to practice

Select numbers 1–100 and/or big-number values. Default is 1–100.

Minuend/Subtrahend

Timer settings

Enable timer mode

Timer shows in the top bar. Enter 0 (or leave blank) for infinite stopwatch.

Mode

Whole game Per question

Whole game duration (seconds)

Per-question duration (seconds)

If time runs out, the question is marked wrong automatically.

Welcome to Subtraction Constellation

What’s your name, star navigator?

Parent controls

Lock/Unlock minuend/subtrahend & timer settings

Set or change parent password

Game over

You scored 0.

Every try shapes your constellation 🌠

Missed problems