Remember: Follow the rule one step at a time. Then look for what the rule never said, like every term being a multiple of 5 or ending in the same digit.
Follow the rule
1
The rule is add 6. What number comes next?
2
The rule is subtract 4. Fill the next number in the pattern: 31, 27, 23,
3
The rule is multiply by 3. What number comes next? 1, 3, 9, 27,
4
Look at the bars. Which is true about the terms 5, 10, 15, 20, 25?
The jumps get bigger each time.Every term is a multiple of 5.Every term is odd.
5
Each step has 3 more squares than the step before. How many squares are in step 5?
6
The rule is start at 4 and add 3. Every term is even.
TrueFalse
Spot what the rule never said
7
The rule is start at 40 and subtract 4. Will 22 be in the pattern?
Yes. Every term is even, and 22 is even.No. Every term is a multiple of 4, and 22 is not.Yes. The terms keep going down, so they reach 22.
8
The rule is start at 3 and add 5. Will 28 be in the pattern?
No. Every term is odd, and 28 is even.No. The terms jump over 28.Yes. Every term ends in 3 or 8, and 28 ends in 8.
9
The terms are 5, 10, 15, 20. Why does every term end in 5 or 0?
Every number ends in 5 or 0.It happens because the terms get bigger.The start ends in 5, and each step adds 5, so the last digit goes 5, 0, 5, 0.
10
The rule is start at 5 and add 7. What is the 4th term?
11
Join each rule to its pattern.
1Start at 9, add 3
2Start at 30, subtract 4
3Start at 1, multiply by 3
4Start at 100, subtract 10
A30, 26, 22, 18
B1, 3, 9, 27
C9, 12, 15, 18
D100, 90, 80, 70
12
The rule is start at 50 and subtract 8. Put the terms in order, first to last.
50
26
42
34
13
Write a rule that makes only odd terms. Then tell how you know every term will be odd.
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