Number Patterns Worksheet Page 17
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28(b)
Explanation which is consistent with the sequence given in part (a)
If a correct answer to 11a appears and is justified by the
explanation, and the box in 11a was left blank, then award
the mark for part (a).
Do not accept vague or arbitrary explanations such as:
‘every time you add you go up’;
‘it does the same pattern’;
‘the numbers between keep going up’;
‘I just guessed’.
Accept explanations in the form of numerical indications on
the number sequence. Explanation must be sufficiently clear
to enable the calculation of missing number.
1
[2]
M7.
23
1
16
1
[2]
M8.
[1]
M9.
(a)
–35 (in left-hand box)
Accept for ONE mark ‘35–’ AND ‘80–’
1
(b)
–80 (in right-hand box)
Accept for ONE mark any two negative numbers such that the
second is 45 less than the first.
1
[2]
Page 17 of 28
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