Page 11 - 新思维数学活动用书4 样章

1 Numbers and the number system

12 The numbers in this sequence increase by 10 Tip

each time.

4, 14, 24, . . . You might find it

The sequence continues in the same way. useful to continue

Write two numbers from the sequence that writing the terms

make a total of 68. of the sequence.
and

13 Describe each of the sequences below.

• Is the sequence linear or non-linear?

• What is the first term?

• What is the term-to-term rule?

• What are the next two terms in the sequence?
a 5, 9, 13, 17, . . .

b 3, 11, 18, 24, . . .

c 3, 6, 12, 24, . . .

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