IXL | Identify mistakes in number patterns

Vincent tried to write a pattern that starts with the number 21 and has the rule add

Here is what Vincent wrote:

21, 26, 32, ...

Is Vincent's pattern correct?

No, the number after 26 should be 31 because 26 plus 5 is 31.

No, the number after 26 should be 30 because 30 is a multiple of 5.

Yes, Vincent's pattern is correct.

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Ian tried to write a pattern that starts with the number 72 and has the rule divide by

Here is what Ian wrote:

72, 36, 16, ...

Is Ian's pattern correct?

No, the number after 36 should be 9 because 36 divided by 4 is 9.

No, the number after 36 should be 18 because 36 divided by 2 is 18.

Yes, Ian's pattern is correct.

Ian tried to write a pattern that starts with the number 72 and has the rule divide by

The first number in the pattern is

72.

Use the rule to find the next number after 72. Divide 72 by 2.

The number after 72 is

36.

Use the rule again to find the next number after 36. Divide 36 by 2.

The number after 36 is

18.

Here is the correct pattern:

72, 36, 18, ...

Here is Ian's pattern:

72, 36,

16,

...

So, Ian's pattern is not correct. The number after 36 should be 18 because 36 divided by 2 is 18.

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