Mathematics
Grade 2
15 min
Which even or odd number comes before or after?
Which even or odd number comes before or after?
Tutorial Preview
1
Introduction & Learning Objectives
Learning Objectives
Identify even and odd numbers up to 100.
Find the next even number after a given even number.
Find the next odd number after a given odd number.
Find the even number that comes just before a given even number.
Find the odd number that comes just before a given odd number.
Explain that even and odd numbers follow a skip-counting by 2 pattern.
Solve simple word problems about number order.
Have you ever noticed the numbers on mailboxes on a street? 🏡 One side is all odd, and the other is all even!
Today, we will be number detectives! 🕵️ We will learn all about even and odd numbers. We will find out which number comes next or before.
Real-World Applications
Finding your house number on a street.
Sharing snacks fairly with a friend.
Pairing up soc...
2
Key Concepts & Vocabulary
TermDefinitionExample
Even NumberA number that can be split into two equal groups, with none left over. It ends in 0, 2, 4, 6, or 8.The number 6 is even. You can make two groups of 3. 🍎🍎🍎 and 🍎🍎🍎.
Odd NumberA number that has one left over when you try to make two equal groups. It ends in 1, 3, 5, 7, or 9.The number 5 is odd. You get two groups of 2, with 1 left over. 🍌🍌 and 🍌🍌, with 🍌.
BeforeThe number that comes first when you are counting backwards.The odd number before 9 is 7. We skipped over the number 8.
AfterThe number that comes next when you are counting forwards.The even number after 10 is 12. We skipped over the number 11.
Number PatternA list of numbers that follows a special rule or order.The pattern 10, 12, 14, 16 is a pattern of even numbers. The rule is 'add...
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Core Formulas
The 'Next' Even or Odd Number Rule
n + 2
To find the very next even or odd number, you always add 2 to your starting number.
The 'Before' Even or Odd Number Rule
n - 2
To find the even or odd number that came just before, you always subtract 2 from your starting number.
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Challenging
I am an odd number between 48 and 52. The even number that comes right after me is 52. What number am I?
A.49
B.50
C.51
D.53
Challenging
There are 28 students in a line. The teacher wants to make the line have the next odd number of students. How many more students need to join the line?
A.1
B.2
C.29
D.3
Challenging
A pattern starts with the odd number right after 10. The pattern counts up by 2. What is the third number in this pattern?
A.13
B.15
C.17
D.11
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