Mathematics Grade 2 15 min

Counting patterns - up to 1,000

Counting patterns - up to 1,000

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1

Introduction & Learning Objectives

Learning Objectives Identify the rule in a number pattern. Count forward by 2s, 5s, and 10s from any number. Count forward and backward by 100s. Find the missing number in a sequence up to 1,000. Extend a number pattern by three or more numbers. Explain a number pattern using simple words. Can you help a robot 🤖 count his bolts? He has 110, 120, 130... what comes next? We will learn about number patterns! We will be number detectives 🕵️‍♀️. Finding patterns helps us count super fast. Real-World Applications Counting money like dimes (10, 20, 30 cents) 🪙 Reading house numbers on a street (120, 122, 124) 🏠 Finding page numbers in a big book 📖 Watching a rocket countdown (10, 9, 8...) 🚀
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Key Concepts & Vocabulary

TermDefinitionExample PatternA pattern is something that repeats over and over again.The numbers 5, 10, 15, 20 follow a pattern. 🍓🍓🍌🍓🍓🍌 Skip CountingSkip counting is counting by a number that is not 1.Counting by 2s is skip counting: 2, 4, 6, 8, 10. 👟👟 RuleThe rule tells you how to get the next number in a pattern.In 10, 20, 30, 40, the rule is 'add 10'. ✨ SequenceA sequence is a list of numbers in a special order.200, 300, 400, 500 is a sequence of numbers. ➡️ Hundreds ChartA big square with numbers 1 to 100 in order.You can see patterns when you color the 5s on a hundreds chart. 🎨 Number LineA long line with numbers on it, like a ruler.You can hop along a number line to see a pattern. 🐸
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Core Formulas

Counting Up Rule (Addition) Next Number = Current Number + Skip Amount Use this when the numbers in the pattern are getting bigger. Counting Down Rule (Subtraction) Next Number = Current Number - Skip Amount Use this when the numbers in the pattern are getting smaller.

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Sample Practice Questions

Challenging
This pattern has two rules! 500, 600, 590, 690, 680, ___. What is the next number?
A.670
B.780
C.690
D.700
Challenging
Pattern A starts at 200 and counts up by 10s. Pattern B starts at 300 and counts down by 10s. Which number will be in both patterns?
A.220
B.250
C.280
D.310
Challenging
A baker makes 440 cookies on Monday. Each day, he makes 100 fewer cookies than the day before. On what day will he make only 40 cookies?
A.Tuesday
B.Wednesday
C.Thursday
D.Friday

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