Decimal Patterns
What is the pattern rule for this sequence?
2.5, 2.7, 2.9, 3.1…
add 0.2 each time.
What are the next three numbers?
5, 10, 15, 20…
25, 30, 35
What is the next term?
80, 75, 70, 65…
60
Using the rule add 4, what is the output when the input is 3?
12
Write the algebraic rule for “add 5.”
HINT: you need to use a letter.
n + 5
What is the pattern rule?
9.8, 9.3, 8.8, 8.3…
minus 0.5 each time.
What is the pattern rule?
1000, 100, 10, 1…
divide by 10.
Identify the pattern rule.
85, 79, 73, 67…
minus 6
A sandbox has 300 cm³ of sand. It gains 20 cm³ every second.
How much sand is in the sandbox after 5 seconds?
400 cm³
Question: What is the rule for this table?
Input: 1, 2, 3
Output: 3, 6, 9
multiply by 3
What are the next two terms in the sequence?
1.4, 1.1, 0.8, 0.5…
0.2, –0.1
What are the next three terms?
3, 6, 9, 12, 15…
18, 21, 24
What are the next three terms?
–2, –1, 0, 1, 2…
3, 4, 5
The rule is Output = Input × 3.
What is the output when the input is 6?
18
A number doubled, then subtract 4.
HINT: you need to use a letter.
2n - 4
Identify the pattern rule for this sequence:
6.2, 7.7, 9.2, 10.7…
add 1.5 each time.
Is this pattern linear or nonlinear?
1, 4, 9, 16, 25…
Nonlinear (square numbers)
What is the pattern rule?
0, 18, 36, 54, 72…
A pattern increases by 7 each step.
If Input = 0 → Output = 10,
what is the Output at Input = 4?
38
The rule is 10n – 3
What is the output when n = 7?
67!!!!!!!!!
A pattern starts at 3.9 and follows the rule –1.2.
What is the 5th term?
minus 0.9 each time.
What is the pattern rule?
–5, –1, 3, 7, 11…
add 4 each time.
What are the next three terms?
7, –1, –10, –20, –31…
–43, –56, –70
The rule is Output = 50 – 4 × Input.
What is the output when Input = 8?
18
A pattern follows the rule 4n + 1.
Write the first five terms.
HINT: n=the term number
5, 9, 13, 17, 21