Counting, number words and numerals：練習題

What is the sixth number in the sequence that starts at 10 and increases by 10 each time?

Identify the missing number in this skip-counting sequence:
\( 2, 5, 8, \dots, 14, 17 \)

Consider a sequence where you start at 1 and skip-count by 4. What is the fifth number in this sequence?

What is the missing number in the sequence below?

\[ 15, 18, 21, \text{?}, 27 \]

Identify the pattern and find the missing value in the following sequence:

\[ 2, 4, 8, 16, \text{?}, 64 \]

What is the next number in the following sequence?
\( 2, 4, 6, 8, 10, \dots \)

A number sequence starts at \( 100 \) and decreases by \( 5 \) each time. What are the next three numbers in the sequence?

Count the sequence and fill in the missing number: \( 10, 20, 30, \dots, 50 \).

Consider the following counting pattern:
105, 110, 115, 120, ...

Part a: Describe the rule of this sequence.
Part b: Find the next three numbers in the sequence.
Part c: Will the number 153 be part of this sequence? Explain why or why not.

A sequence of numbers is formed by starting at 200 and counting backwards by a constant amount each time. The first four numbers are:
200, 188, 176, 164.

Part a: What is the common difference between consecutive terms in this sequence?
Part b: Calculate the 8th term of this sequence.
Part c: If the sequence continues, what is the first number in the sequence that is less than 100?