Everyday Mathematics Grade 2, Unit 7: Patterns and Rules
In this unit, your child looks for patterns in numbers. They sort numbers into odd and even, skip-count by 5s, 10s, and 100s, and add or subtract 10 or 100 in their heads. Spotting what changes and what stays the same builds on their work with bigger numbers and leads into arrays and shapes in the next unit.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Unit 7?
- Telling if a group of up to 20 things is odd or even by pairing them, and writing even numbers as doubles, like 8 = 4 + 4. Learn more: Odd and even numbers
- Counting by 5s, 10s, and 100s from any number up to 1,000, and finding the rule in a number pattern. Learn more about counting within 1,000: Counting within 1,000 · Learn more about skip-counting by 5s, 10s, and 100s
- Adding or subtracting 10 or 100 in their heads, seeing that only the tens or hundreds digit changes, as in 432 to 532. Learn more: Adding or taking away 10 or 100 mentally
Sample questions to try together
These are real questions from our practice. Tap the speaker to hear one read aloud, or the light bulb for a hint, and talk about the answer together.
Question 1 of 3
Is 16 an even or odd number?
- Even
- Odd
- Neither
How you can help
- Pair up socks from the laundry and ask whether the pile is odd or even. If one sock is left without a partner, the number of socks is odd.
- Play 'What's my rule?' on a walk: say 35, 45, 55, and ask for the rule and the next number. Then let your child make up a pattern for you.
- Call out a number like 432 at dinner and ask for 10 more, then 100 more. Ask which digit changed each time and why the others stayed the same.
Where kids can get stuck
- Judging odd or even by size, thinking big numbers like 18 must be odd.
- Changing the wrong digit, saying 442 instead of 532 for 100 more than 432.
- Jumping to round numbers when counting by 10s from 47, going 47, 50, 60 instead of 47, 57, 67.
Practice makes perfect
Bobby's Math Club has practice problems that adapt to your child’s level, each with a detailed explanation and an easy-to-follow video, so your child can build confidence in these skills one step at a time.
Words your child will hear
- odd
- A number that has one left over when you make pairs, like 7 or 15.
- even
- A number that splits into pairs with none left over, like 6 or 14.
- pair
- A group of two.
- skip-count
- To count by a number other than 1, such as 5, 10, 15, 20.
- pattern
- Numbers or shapes that repeat or change in a regular way.
- rule
- What a pattern does each time, such as add 10.
- mentally
- In your head, without writing it down.
Want to help your child master number patterns?
In Bobby's Math Club, your child practices these skills at just the right level, with a hint when they need one, a clear explanation after every question, and kid-friendly videos. Unlimited practice is free.
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Written by Robert “Bobby” Barnett
Bobby is an award-winning math teacher, the author of Meet Every Learner’s Needs, and the father of two elementary-school math learners. He uses Bobby’s Math Club with his own kids a few times every week. Learn more or contact Bobby.
Which math standards does Everyday Mathematics Grade 2 Unit 7 cover?
Everyday Mathematics Grade 2 Unit 7 covers these math standards. Each one links to what it means, sample questions, and teaching strategies.
For teachers: Unit names and order vary between editions and districts, so your school’s own materials have the exact sequence. Learn how Bobby's Math Club can help your students grow.