Comparing numbers up to 100

key notes :

Comparing numbers

🎆Understanding the Basics:

  • Greater Than (>), Less Than (<), and Equal To (=):
    • Greater Than (>): The first number is larger than the second. Example: 78 > 45.
    • Less Than (<): The first number is smaller than the second. Example: 23 < 56.
    • Equal To (=): Both numbers are the same. Example: 32 = 32.

🎇Place Value:

  • Tens and Ones: Understand that a two-digit number has a tens place and a ones place.
  • Compare the tens place first:
    • Example: 54 vs. 78 — Compare 5 (50) and 7 (70).
  • If the tens place is the same, compare the ones place:
    • Example: 54 vs. 57 — Compare 4 and 7.

🧨Using Number Lines:

  • Place both numbers on a number line.
  • The number on the right is greater, and the number on the left is smaller.
  • Example: Comparing 34 and 29 on a number line shows 34 is greater.

🎄Comparing Using Objects:

  • Use objects like counters, blocks, or beads to visually compare numbers.
  • Count out the objects for each number and see which group has more or less.

🎄Ordering Numbers:

  • Ascending Order: Arrange numbers from smallest to largest.
    • Example: 12, 25, 48, 67, 89.
  • Descending Order: Arrange numbers from largest to smallest.
    • Example: 89, 67, 48, 25, 12.

🎉🎉Practice with Examples:

  • Which is Greater? Compare pairs of numbers and decide which is larger or smaller.
    • Example: 83 vs. 76 (83 is greater).
  • Word Problems: Solve problems that involve comparing numbers.
    • Example: “Tom has 34 apples, and Jane has 42. Who has more apples?”

👓Symbols in Sentences:

  • Practice writing sentences with comparison symbols.
  • Example: “45 is greater than 32” is written as “45 > 32”.
=When two values are equal, we use the “equals” signexample:
2+2 = 4
<When one value is smaller than another, we can use a “less than” sign.example:
3 < 5
>When one value is bigger than another, we can use a “greater than” signexample:
9 > 6

Which words make this statement true?

89 ____ 88.

When you count, 89 comes after 88.

89 is greater than 88.

Which words make this statement true?

32 ____ 33

When you count, 32 comes before 33.

32 is less than 33.

Learn with an example

🗼 Which words make this statement true?

9 ____ 11.

  • is greater than
  • is less than
  • is equal to

First, count the number of digits in each number. There is 1 digit in 9 and 2 digits in 11. The number with fewer digits is always less.

9 is less than 11.

🗼 Which words make this statement true?

68 ____ 88.

  • is greater than
  • is less than
  • is equal to

First, count the number of digits in each number. There are 2 digits in each number. They have the same number of digits.

Compare the tens digits. The tens digit in 68 is 6. The tens digit in 88 is 8. 6 is less than 8.

68 is less than 88.

🗼Which words make this statement true?

17 ____ 19.

  • is greater than
  • is less than
  • is equal to
  • First, count the number of digits in each number. There are 2 digits in each number. They have the same number of digits.
  • Compare the tens digits. The tens digit in 17 is 1. The tens digit in 19 is 1. They have the same tens digit.
  • Now compare the ones digits. The ones digit in 17 is 7. The ones digit in 19 is 9. 7 is less than 9.
  • 17 is less than 19.

Let’s practice!🖊️