Addition within 4

### 1.1. Knowledge to remember

– Table to add numbers in the range 4

– How to add numbers within 4 and apply them to real situations.

### 1.2. Maths on Addition within 4

**Form 1: Performing the calculation**

Calculate the value of additions within 4 by repeating the learned operations.

**Form 2: Write calculations for the figures.**

– Count the number of objects in each picture.

– Write the corresponding numbers and calculations.

**Form 3: Fill in the missing element in the addition.**

Repeat the addition of numbers with range 4 and fill in the missing numbers.

### 1.3. Textbook Exercises Page 47

**Lesson 1 page 47**

Calculate:

1 + 3 = 3 + 1 = 1 + 1 =

2 + 2 = 2 + 1 = 1 + 2 =

**Solution method**

Mentally add numbers within 4 and fill in the blanks with the result.

**Solution guide**

1 + 3 = 4 3 + 1 = 4 1 + 1 = 2

2 + 2 = 4 2 + 1 = 3 1 + 2 = 3

**2. Solve problem 2 page 47 Math textbook 1**

Calculate:

__Solution method__

Add the numbers vertically and fill in the blanks with the result.

__Solution guide__

**3. Solve problem 3 page 47 Math textbook 1**

Enter the sign >; = ; < in the dot:

2 + 1….3 4…..1 + 2

1 + 3….3 4…..1 + 3

1 + 1….3 4…..2 + 2

__Solution method__

– Calculate the value of the calculated sides.

Compare and then fill in the blanks with the appropriate mark.

__Solution guide__

2 + 1 = 3 4 > 1 + 2

1 + 3 > 3 4 = 1 + 3

1 + 1 < 3 4 = 2 + 2

**4. Solve problem 4 page 47 Math textbook 1**

Write the appropriate calculation:

__Solution method__

– Observe the image, count the number of additional birds flying and the number of birds sitting on the branches.

– Write the appropriate calculation and find the result of that calculation.

__Solution guide__

### 1.4. Solving Textbook Exercises page 48

**Lesson 1 page 48**

Calculate:

**Solution method**

Vertically add numbers within 4 and fill in the blanks with the result.

**Solution guide**

**Lesson 2 page 48**

Number?

__Solution method__

Find the result of the addition of numbers and then fill in the blanks.

__Solution guide__

**Lesson 3 page 48**

Calculate:

__Solution method__

Perform addition of numbers from left to right.

__Solution guide__

**Lesson 4 page 48**

Write the appropriate calculation:

__Solution method__

Count the number of people in the picture: The number you are waiting for, the number you run to add, all the people in the picture and then write the appropriate calculation.

**Solution guide**

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