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 ↓


Adding Two More


Understanding the concept of adding two more in basic addition is an important step in early math learning for first grade students. When we talk about "adding two more," we are simply increasing a given number by two.

Let's start understanding this concept with a simple question: what happens when you have five apples, and you add two more apples to the basket? To find out how many apples you have in total, you just need to add two apples to the number you already have.

Example 1: Adding five to two

Imagine you have 5 apples and you add 2 more. You can look at it like this:

 5 + 2 = 7

This means that you will have 5 red apples, and you will add 2 green apples, making a total of 7 apples.

Adding two and one is something we do in everyday life. It helps with counting objects, playing games, and even grocery shopping. By learning to add two and one, children begin to understand how numbers grow. They can easily see that when a number "grows," it gets bigger.

Example 2: Adding two to eight

Now, let's try adding 2 more to a different number, say 8:

 8 + 2 = 10

In this case, you start with 8 blue dots, then add 2 green dots for a total of 10 dots.

You can follow the same steps every time you add two more to a number. Start by counting the number you have, then count two more. This process helps build a strong foundation for addition and subtraction.

Text examples and practice problems

Let's consider some more examples and practice problems where you add two more:

  • 4 + 2 = 6
  • 10 + 2 = 12
  • 15 + 2 = 17
  • 21 + 2 = 23

Practice problems for additional understanding:

  • If you have 6 candies and someone gives you 2 more candies, how many candies will you have?
  • There are 9 ducks in the pond. 2 more ducks join them. How many ducks are there in the pond now?
  • You have 13 stickers. You will get 2 more stickers. How many stickers do you have now?
  • You see 18 monkeys in the zoo. You see 2 more monkeys on another tree. How many monkeys have you seen in total?

Each time you practice, try using objects like pencils, blocks, or coins to represent the numbers. This makes the learning process fun and visually stimulating, which also helps improve number recognition and fluency.

Example 3: Using storytelling

Choose a short story format to practice adding two more stories for better understanding.

 
  "Tommy has 11 toy cars. He finds 2 more toy cars under his bed. How many toy cars does Tommy have now?"

To solve this, just add 11 and 2:

 11 + 2 = 13

Tommy now has a total of 13 toy cars.

Storytelling is an engaging way to help children connect math problems to real-life scenarios. Using everyday situations to create story problems helps students understand the practical implications of addition.

As children progress, they can also use mental math strategies. For example, they can start by adding one to a number and then add one more to quickly find the solution.

Example 4: Mental math

Let's say you want to mentally add 2 and 7:

Understand this in two steps:

  1. Add 1 to 7, which will be 8.
  2. Add 1 more to 8, which will be 9.

so:

 7 + 2 = 9

By practicing these examples repeatedly, students can enhance their number sense and begin to notice patterns in numbers, making arithmetic easier and more natural.

Adding two and one is not only about getting the right answer; it helps strengthen cognitive skills like reasoning, problem-solving, and logical thinking. For young learners, practical practice is important, so keep practicing with physical objects and drawing as much as possible.

Let's take another step and try adding two more numbers with slightly larger numbers, like those in the range of 20 or 30.

Example 5: Adding twenty-six to two

What happens when we add 2 more to 26?

 26 + 2 = 28

Breaking this down, you might think:

  1. Add 1 to 26, which will be 27.
  2. Add 1 more to 27, which will be 28.

It may be beneficial to reinforce the concept with larger numbers to show the consistency of the addition rule regardless of the size of the number.

Example 6: Adding thirty-one to two

How do you add 2 to 31?

 31 + 2 = 33

Imagine this step by step:

  1. Add 1 to 31, which will be 32.
  2. Add 1 more to 32, which becomes 33.

By visualizing each step and the objects in motion physically (or by picturing them mentally), students can successfully grasp these concepts. Such practice is helpful because it provides confidence in dealing with any numbers, making math feel friendly and accessible.

In conclusion, “adding two more” is a straightforward process, yet fundamental to understanding arithmetic. It helps children see that numbers can grow and change, thereby broadening their math knowledge. Through consistent practice with a variety of methods such as objects, drawing, storytelling, and mental math, students will build a solid arithmetic foundation. The goal is for learners to reach the point where adding two more becomes instinctive, setting the stage for more advanced math concepts in the future.


Grade 1 → 2.6


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Adding Two More

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