Review – ways to subtract – up to 10

key notes :

What is Subtraction?

  • Subtraction means taking away or finding how many are left.
  • Example: 5 - 2 = 3 ✅
    (Take 2 away from 5, 3 are left)

Using Fingers ✋

  • Count objects on your fingers and take away the number to find the answer.
  • Example: Show 7 fingers → take away 4 → 3 fingers left.

Using Number Line ➖

  • Draw a line of numbers from 0 to 10.
  • Start at the bigger number → move backward by the smaller number.
  • Example: 8 - 3 → start at 8, move 3 steps back → land on 5.

Using Counters or Objects 🟢🔵

  • Use small objects like buttons or stones.
  • Count total → remove some → count what is left.

Subtraction as “Finding the Difference” ⚖️

  • Example: “I have 9 apples, my friend has 6 apples. How many more do I have?”
  • 9 − 6 = 3

Subtraction with Pictures 🖼️

  • Draw pictures of objects and cross out the number taken away.
  • Count the remaining objects for the answer.

Using Addition to Check ✔️

  • You can check subtraction using addition:
    • Example: 7 − 4 = 3
    • Check: 3 + 4 = 7 ✅

Quick Facts: Subtracting 0 and the Number Itself

  • Any number minus 0 = same number
  • Any number minus itself = 0
  • Examples: 6 - 0 = 6, 7 - 7 = 0

Practice Makes Perfect ✏️

  • Use games, flashcards, and daily objects to practice subtracting numbers up to 10.

Learn with an example

Select all of the ways to make 3.

  • 8 − 5
  • 6 − 3
  • 7 − 4
  • 9 − 7

These are ways to make 3:

8 − 5 = 3

6 − 3 = 3

7 − 4 = 3

This is not a way to make 3:

9 − 7 = 2

Which is not a way to make 7?

  • 9 − 2
  • 7 − 0
  • 10 − 3
  • 6 − 0

This is not a way to make 7:

6 − 0 = 6

These are ways to make 7:

9 − 2 = 7

7 − 0 = 7

10 − 3 = 7

How do you make 2?

  • 9 − 7
  • 4 − 4
  • 8 − 5
  • 6 − 3

This is a way to make 2:

9 − 7 = 2

These are not ways to make 2:

4 − 4 = 0

8 − 5 = 3

6 − 3 = 3

Let’s practice!🖊️