IXL - Identify mistakes in number patterns (Algebra 1 practice)

Oscar tried to complete this input/output table using the rule.

Rule: The output is

–

Input ( n )	24	21	18	15
Output ( p )	12	9	6	3

Is Oscar's table correct?

No, Oscar subtracted 3 from the last input to get the first output. He should have subtracted 3 from each input to get each output.

No, Oscar divided each input by 2 to get the output. He should have subtracted 3 from each input.

Yes, Oscar's table is correct.

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Learn with an example

Joey tried to write a pattern that starts with the number 2 and has the rule multiply by

Here is what Joey wrote:

2, 10, 20, ...

Is Joey's pattern correct?

Joey tried to write a pattern that starts with the number 2 and has the rule multiply by

The first number in the pattern is

Use the rule to find the next number after 2. Multiply 2 by 5.

The number after 2 is

10.

Use the rule again to find the next number after 10. Multiply 10 by 5.

The number after 10 is

50.

Here is the correct pattern:

2, 10, 50, ...

Here is Joey's pattern:

2, 10,

20,

...

So, Joey's pattern is not correct. The number after 10 should be 50 because 10 times 5 is 50.

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