Number Sequences

Determining missing terms in a number sequence

Ms. Kath presented these number sequences to her Math class.

a. 6, 8, 10, 12 _

b. 5, 7, 9, _, _

Ms. Kath presented these number sequences to her Math class.

a. 6, 8, 10, 12, 16

b. 5, 7, 9, 11, 13

How did you get the answer?

a. Using skip counting by 2

- jumping from 1 number to another number

- the numbers are even numbers therefore, skip the odd numbers

- adding 2

b. a set of odd numbers

- eliminate even numbers

- counting numbers but skipping the even numbers

- adding 3

Rules in determining the missing terms

• look for the PATTERN

• TEST the pattern

• CHECK

ex. 2, 4, 6, 8, _

LOOK FOR THE PATTERN

*This is a sequence of even numbers, therefore the pattern is EVEN NUMBERS

*it has multiples of 2 - skip count by 2

or simply add 2 to get the next term

TEST THE PATTERN

2, 4, 6, and 8 are even numbers but 9 is odd so simply skip 9 and continue to 10

2+2=4 | 4+6=8 | 8+2=10

CHECK

review your answer

Fill in the Blanks

TEST YOURSELF

1, 3, _, 7, 9

Fill in the Blanks

CHALLENGE YOURSELF

7, 14, _, 28, 30

Fill in the Blanks

CHALLENGE YOURSELF

7, 14, _, 28, 30