Page 24 - 新思维数学活动用书6 样章
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2.1 Counting and sequences
12 A sequence has a position-to-term rule of multiply by 6. Complete the table.
Position Term
1
2
30
36
72
13 The numbers in this sequence increase by equal amounts each time.
a Write the three missing numbers.
10, , , , 42
b What is the term-to-term rule for the sequence?
c Salma says, ‘The position-to-term rule is multiply by 8.ʼ Is she correct?
Explain your answer.
3 3
14 Ahmed counts back in steps of starting at 3 .
4
4
1
3
He counts 3 , 3, 2 , …
4 4
Which of these numbers does Ahmed say?
Draw a ring around the correct answer.
3
1
1
1
4 1 –4 –6 –8 1
4
2
2
4
4
23
