# Missing Terms

## A Maths Starter Of The Day

Find the missing terms from these sequences:

 2,   6,   10,   14,  __ 6,  __  __  81,  __ 5,  __  19,  __  33 12,  __  __  __  40 9,  __  33,  __  __ -26,  __  __  37,  __ 13,  __  __  52,  __ 34,  __  __  -44,  __ 8,  __  __  29,  __ 25,  __  __  7,  __

Topics: Starter | Number | Puzzles | Sequences

• Primary 7, Bargeddie Primary School, North Lanarkshire
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• We were all really impressed by Thomas who managed to get them all right really quickly!
• Transum,
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• After the students have had time to work out many of the answer the following questions could be asked of the whole class:
What is the next term of the first sequence and how did you find it?
What is the first term of the first sequence? ... The common difference? ... The 10th term? The 100th term? The nth term?
For the second sequence in the first column how did you work out the first missing number? Is there another way you could have done it?
For the first sequence in the second column. How did you work out the first missing number? Is there another way you could have done it?
What do all of the sequences have in common?
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• We were very impressed with our genius' Luke and Jack. We got them all. Woohoo!
• Jm,
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• Find the missing terms in the following numbers sequences
1.) 5,6,8,_15,
2.) 18,20,24_,38,_
3.) 25,28,34,_,_,70
4.) 55,54,51,46,_,_,19
5.) 82 81 78 _ ,66,_.
• Michael, Bolton School
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• Louisa, .
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• I did this with my daughter as she is no longer in school and we managed to get them all. this is a good activity for anyone.

How did you use this starter? Can you suggest how teachers could present or develop this resource? Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.

Previous Day | This starter is for 16 April | Next Day

 2, 6, 10, 14, 18 6, 31, 56, 81, 106 5, 12, 19, 26, 33 12, 19, 26, 33, 40 9, 21, 33, 45, 57 -26, -5, 16, 37, 58 13, 26, 39, 52, 65 34, 8, -18, -44, -70 8, 15, 22, 29, 36 25, 19, 13, 7, 1

Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.

## Extension

What would the nth term of each of these sequences be?

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Here is the URL which will take them to a related student activity.

Transum.org/go/?to=missing