Grade 1
  1. Numbers and Counting  1.1. Counting to 10  1.2. Counting to 20  1.3. Counting to 50  1.4. Counting to 100  1.5. Writing Numbers 1 to 10  1.6. Writing Numbers 1 to 20  1.7. Writing Numbers 1 to 50  1.8. Writing Numbers 1 to 100  1.9. Reading Numbers 1 to 10  1.10. Reading Numbers 1 to 20  1.11. Reading Numbers 1 to 50  1.12. Reading Numbers 1 to 100  1.13. Comparing Numbers  1.14. Ordering Numbers  1.15. Odd and Even Numbers  1.16. Number Patterns  1.17. Skip Counting by 2s, 5s, and 10s  1.18. Understanding Zero
  2. Basic Addition and Subtraction  2.1. Understanding Addition  2.2. Addition Facts within 10  2.3. Addition Facts within 20  2.4. Adding Zero  2.5. Adding One More  2.6. Adding Two More  2.7. Adding Three More  2.8. Adding Using Pictures  2.9. Addition Word Problems  2.10. Understanding Subtraction  2.11. Subtraction Facts within 10  2.12. Subtraction Facts within 20  2.13. Subtracting Zero  2.14. Subtracting One  2.15. Subtracting Two  2.16. Subtraction Using Pictures  2.17. Subtraction Word Problems  2.18. Introduction to Doubles Facts  2.19. Introduction to Making 10
  3. Place Value and Number Sense  3.1. Understanding Tens and Ones  3.2. Counting by Tens  3.3. Place Value within 20  3.4. Place Value within 50  3.5. Place Value within 100  3.6. Reading and Writing Two-Digit Numbers  3.7. Comparing Two-Digit Numbers  3.8. Decomposing Numbers
  4. Measurement  4.1. Length  4.1.1. Comparing Lengths  4.1.2. Measuring with Non-Standard Units  4.1.3. Using Standard Units (Inches and Centimeters) in Length  4.2. Weight  4.2.1. Comparing Weights  4.2.2. Heavy and Light Objects  4.2.3. Introduction to Grams and Pounds  4.3. Capacity  4.3.1. Comparing Capacity  4.3.2. Full and Empty  4.3.3. Introduction to Liters and Milliliters  4.4. Time  4.4.1. Telling Time to the Hour  4.4.2. Telling Time to the Half Hour  4.4.3. Days of the Week  4.4.4. Months of the Year  4.4.5. Understanding Yesterday, Today, and Tomorrow  4.5. Money  4.5.1. Recognizing Coins  4.5.2. Counting Coins  4.5.3. Introduction to Dollar and Cents Symbols  4.5.4. Simple Addition and Subtraction with Money
  5. Geometry  5.1. 2D Shapes  5.1.1. Recognizing 2D Shapes  5.1.2. Drawing 2D Shapes  5.1.3. Naming 2D Shapes  5.1.4. Properties of 2D Shapes  5.1.5. Sorting 2D Shapes  5.1.6. Composing Simple Shapes  5.2. 3D Shapes  5.2.1. Recognizing 3D Shapes  5.2.2. Naming 3D Shapes  5.2.3. Properties of 3D Shapes  5.2.4. Sorting 3D Shapes  5.3. Position and Direction  5.3.1. Left and Right  5.3.2. Above and Below  5.3.3. Inside and Outside  5.3.4. Near and Far  5.3.5. In Front and Behind
  6. Patterns and Sorting  6.1. Recognizing Patterns  6.2. Extending Patterns  6.3. Creating Patterns  6.4. Sorting by Color  6.5. Sorting by Shape  6.6. Sorting by Size
  7. Data and Graphing  7.1. Introduction to Data  7.2. Collecting Data  7.3. Tally Marks  7.4. Bar Graphs  7.5. Picture Graphs  7.6. Interpreting Simple Graphs
  8. Fractions  8.1. Understanding Halves  8.2. Understanding Fourths  8.3. Dividing Shapes into Equal Parts  8.4. Identifying Equal and Unequal Parts

Grade 1 → Basic Addition and Subtraction ↓


Subtraction Facts within 10


Subtraction is one of the basic operations used in math to find the difference between numbers. When we talk about “subtraction facts within 10,” we are focusing on subtracting numbers where the numbers involved are not a multiple of 10. This fundamental concept is important for young learners in grade 1, as it lays the groundwork for more complex mathematical operations. Let’s look at this concept in detail.

Understanding subtraction

Before we discuss subtraction facts, it is important to understand what subtraction means. Subtraction is the process of subtracting a certain number from another number, and it answers the question, "How many numbers are left?" For example:

5 - 2 = 3

This means that if we have 5 objects and we remove 2 of them then we will be left with 3.

Subtraction facts within 10

Subtraction facts within 10 cover all possible subtractions where both numbers are less than or equal to 10. Here is a list of all subtraction facts within 10:

  • 10 - 0 = 10
  • 10 - 1 = 9
  • 10 - 2 = 8
  • 10 - 3 = 7
  • 10 - 4 = 6
  • 10 - 5 = 5
  • 10 - 6 = 4
  • 10 - 7 = 3
  • 10 - 8 = 2
  • 10 - 9 = 1
  • 10 - 10 = 0
  • 9 - 0 = 9
  • 9 - 1 = 8
  • 9 - 2 = 7
  • 9 - 3 = 6
  • 9 - 4 = 5
  • 9 - 5 = 4
  • 9 - 6 = 3
  • 9 - 7 = 2
  • 9 - 8 = 1
  • 9 - 9 = 0
  • 8 - 0 = 8
  • 8 - 1 = 7
  • 8 - 2 = 6
  • 8 - 3 = 5
  • 8 - 4 = 4
  • 8 - 5 = 3
  • 8 - 6 = 2
  • 8 - 7 = 1
  • 8 - 8 = 0
  • 7 - 0 = 7
  • 7 - 1 = 6
  • 7 - 2 = 5
  • 7 - 3 = 4
  • 7 - 4 = 3
  • 7 - 5 = 2
  • 7 - 6 = 1
  • 7 - 7 = 0
  • 6 - 0 = 6
  • 6 - 1 = 5
  • 6 - 2 = 4
  • 6 - 3 = 3
  • 6 - 4 = 2
  • 6 - 5 = 1
  • 6 - 6 = 0
  • 5 - 0 = 5
  • 5 - 1 = 4
  • 5 - 2 = 3
  • 5 - 3 = 2
  • 5 - 4 = 1
  • 5 - 5 = 0
  • 4 - 0 = 4
  • 4 - 1 = 3
  • 4 - 2 = 2
  • 4 - 3 = 1
  • 4 - 4 = 0
  • 3 - 0 = 3
  • 3 - 1 = 2
  • 3 - 2 = 1
  • 3 - 3 = 0
  • 2 - 0 = 2
  • 2 - 1 = 1
  • 2 - 2 = 0
  • 1 - 0 = 1
  • 1 - 1 = 0

Why are subtraction facts important?

Subtraction facts help children understand the concept of 'subtraction' and understand the difference between numbers. Mastering these facts helps the child get comfortable with numbers and arithmetic operations. This foundation will help solve more advanced subtraction problems and can aid in understanding real-life situations, such as sharing toys or comparing amounts.

Examples and visualizations

Let's look at some basic subtraction examples, using numbers and objects to represent subtraction:

Using objects

Suppose we have 5 apples and we subtract 2 apples. How many apples are left? To find this we use subtraction.

5 - 2 = 3

We started with 5 red apples and removed 2 (shown in light gray). Now we are left with 3 apples.

Using the number line

The number line is another useful tool for learning subtraction. Let's subtract 3 from 7 using the number line:

7 - 3 = 4
0 1 2 3 4 5

Start at 7 on the number line and move 3 places to the left to get to 4. This visual method makes subtraction more concrete.

More subtraction practice

Practicing subtraction regularly helps children remember these basic facts and recall them quickly in real-world scenarios. Here are more examples of exercises for kids:

  • 6 - 2 = 4
  • 5 - 3 = 2
  • 7 - 4 = 3
  • 9 - 5 = 4
  • 8 - 2 = 6
  • 4 - 0 = 4
  • 3 - 1 = 2
  • 2 - 2 = 0
  • 10 - 7 = 3

Tips for mastery

Here are some tips to help children master subtraction facts within 10:

Practice with everyday objects

Practice physical elimination using everyday objects such as toys, fruit or blocks. For example, take 10 blocks, remove some of them and count what's left.

Include games

Incorporate subtraction games that encourage children to subtract in fun situations. Games like "subtraction bingo" or card games that involve subtracting values can make learning fun.

Visualization

Use visual aids like number bonds or counting bears to help visualize subtraction. Seeing the process can help solidify concepts.

Relating to real-life situations

Connect subtraction to real-life scenarios – like sharing food or subtracting time – to help understand its practical applications.

Keep it fun and interactive

Maintain an engaging approach to subtraction with activities that inspire curiosity and enjoyment in math.

Conclusion

Subtraction facts within 10 are an important step in a child's mathematical development. Understanding these facts helps young learners build a strong foundation for more complex mathematical operations. Practicing these facts in different ways such as visual examples, storytelling, and engaging activities can greatly improve a child's understanding of subtraction. By making learning interactive and enjoyable, children can overcome their fear of math and gain confidence in their mathematical abilities.


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Subtraction Facts within 10

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