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.

Difficulty Level:

**Instructions:**

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.

**Timed Subtraction**- Find the difference between the numbers

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