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Alien Subtraction

Alien Subtraction

Aliens are coming to take over our planet. Each ship is labelled with a number. Don't let the aliens land by clicking the ship with the difference of the numbers shown before it lands.
Levels and Question Sets
Numbers up to 5
Timed Subtraction - Find the difference between the numbers
1. Read the given number sentence.
2. Find the difference between the given numbers.
3. Click the correct answer before the enemy lands in our territory.