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Missing-Term Mystery Files

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Missing-Term Mystery Files

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About this activity

Solve missing terms in number patterns

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Hidden Author
Hidden Author
Lebanon

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Missing-Term Mystery Files
 

Missing-Term Mystery FilesOnline version

Solve missing terms in number patterns

by Hidden Author
1

CASE 1 Clue: 44, 55, 66, 77, ___ What number is missing?

Hints

The next term ends with 8.

Add 11 to the previous term.

Each step increases by the same amount.

2

CASE 2 Clue: 2, 4, 6, 8, ___ Correct Answer:

Hints

Next term is 8 plus 2.

It's an even-number sequence.

Add 2 to the previous term.

3

CASE 3 Clue: 10, 20, 30, 40, ___ Correct Answer:

Hints

40 + 10 equals the next term.

Each term is a multiple of 10.

Add 10 to the previous term.

4

CASE 4 Clue: 5, 7, ___, 11 Correct Answer:

Hints

Pattern increases by 2 each step.

The missing term lies between 7 and 11.

The difference between terms is 2.

5

CASE 5 Clue: 3, 6, ___, 12 Correct Answer:

Hints

All numbers are multiples of 3.

The middle term should be 9.

Add 3 to the previous term.

6

CASE 6 Clue: 100, 90, 80, ___, 60 Correct Answer:

Hints

The term before 60 is 70.

Countdown by tens.

Subtract 10 each step.

7

CASE 7 Clue: 30, 25, 20, ___, 10 Correct Answer:

Hints

Pattern decreases by 5 each step.

The missing term sits between 20 and 10.

Subtract 5 each time.

8

CASE 8 Clue: 2, 4, 8, ___, 32 Correct Answer:

Hints

Missing term is the intermediate doubling.

Sequence doubles repeatedly.

Multiply by 2 each step.

9

CASE 9 Clue: 64, 32, 16, ___, 4 Correct Answer:

Hints

The term before 4 is 8.

Powers of two are halved.

Divide by 2 each time.

10

CASE 10 Clue: 7, 14, 21, ___, 35 Correct Answer:

Hints

Sequence goes 7,14,21,28,35.

All terms are multiples of 7.

Add 7 to the previous term.

 
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