Page 22 - 新思维数学活动用书6 样章
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2.1 Counting and sequences
5 Here is part of a table showing the position of some terms in the sequence 100,
200, 300, ...
a Complete the table.
Position 1 2 5 10 100
Term 100
b What is the position-to-term rule for the sequence 100, 200, 300, …?
Practice
6 Given the first term and the term-to-term rule, write down the first six terms of each
sequence. Then find the position-to-term rule and the 50th term.
a First term: 7, term-to-term rule: add 7
First six terms:
Position-to-term rule:
50th term:
b First term: 11, term-to-term rule: add 11
First six terms:
Position-to-term rule:
50th term:
7 Safia counts back in steps of 0.5 starting at 2.9.
a What is the 5th number in her sequence?
b What is the 10th number in her sequence?
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