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Missing Number Riddle Trail

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Missing Number Riddle Trail

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About this activity

Pattern puzzles to finish sequences

Created by

Hidden Author
Hidden Author
Lebanon

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Missing Number Riddle Trail
 

Missing Number Riddle TrailOnline version

Pattern puzzles to finish sequences

by Hidden Author
1

Riddle 1: Complete the pattern: 3, 6, __, __

Hints

The next two numbers should follow the same rule.

The same amount is added every time.

Think about what you add to each number to move to the next.

2

Riddle 2: Complete the pattern: 5, 7, 9, 11, __

Hints

Add the same amount to get the next term.

It’s a constant increase.

Look at the difference between consecutive terms.

3

Riddle 3: Complete the pattern: 4, 6, 8, 10, __

Hints

The next number should follow the same rule.

Add 2 each time.

Same step size as previous terms.

4

Riddle 4: Complete the pattern: 2, 4, 6, 8, __

Hints

What comes after 8 if you add 2?

The pattern is a simple even-number sequence.

Keep adding 2.

5

Riddle 5: Complete the pattern: 7, 9, 11, 13, __

Hints

Pattern stays in the same arithmetic sequence.

Add 2 to get the next term.

This is a steady increase.

6

Riddle 6: Complete the pattern: 3, 6, 9, 12, __

Hints

The next two numbers go 15, 18 if extended.

Add the same amount each time.

Same pattern as in Riddle 1 but starting from 3.

7

Riddle 7: Complete the pattern: 10, 8, 6, 4, __

Hints

The next number after 4 is 2.

Subtract 2 each time.

Now the numbers are decreasing.

8

Riddle 8: Complete the pattern: 1, 2, 4, 7, 11, __

Hints

The next difference will be 5.

Differences: 1, 2, 3, 4, ...

Each time you add a growing amount.

9

Riddle 9: Complete the pattern: 20, 18, 16, 14, __

Hints

What is 2 less than 14?

Keep the same subtraction.

You are counting down by 2.

10

Riddle 10: Complete the pattern: 5, 25, 125, __

Hints

Next term is 5^4.

Think of powers of a fixed base.

Each term multiplies by the same number.

 
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