Addition and subtraction tables within 10

### 1.1. Knowledge to remember

– Read, write, compare numbers in the range 0 to 10

– Belongs to the table of addition and subtraction and is proficient in addition and subtraction within 10, the relationship between addition and subtraction.

– Write an appropriate calculation from a picture or a summary of a given problem.

– Review the learned shapes and count the number of triangles.

### 1.2. Math forms on Addition and Subtraction tables within 10

Form 1: Performing the calculation

Apply knowledge of addition and subtraction within 10 learned.

Form 2: Write math operations from the given summary

– Read carefully the information of the summary of the problem: How many are there? How much is added or subtracted? Need to find the amount of both or remaining?

– Determine the appropriate calculation from the given information, usually, when calculating both or all, we often use the addition operation; Conversely, if you want to calculate the amount remaining after subtracting, use subtraction.

– Write the math and check the results you just found.

Form 3: Determine the next figure of the rule

Determines the shapes included in the given sequence and the order in which the shapes are repeated.

### 1.3. Solve textbook exercises pages 86, 87

Lesson 1 page 86

Calculate:

a) 3 + 7 = 4 + 5 = 7 – 2 = 8 – 1 =

6 + 3 = 10 – 5 = 6 + 4 = 9 – 4 =

b)

__Solution method__

Find the value of addition and subtraction within 10.

__Solution guide__

a) 3 + 7 = 10 4 + 5 = 9 7 – 2 = 5 8 – 1 = 7

6 + 3 = 9 10 – 5 = 5 6 + 4 = 10 9 – 4 = 5

b)

Lesson 2 page 87

Number?

__Solution method__

Fill in the missing blank with numbers so that the sum of two cells in the same row equals the value of the number given in the top row.

__Solution guide__

Lesson 3 page 87

Write the appropriate calculation:

a)

b) Yes: 10 balls

Give : 3 balls

Also: …. the ball?

__Solution method__

a) Count the number of boats in each row and then write the calculation to find both rows.

b) Write the calculation as the number of balls initially minus the given number of balls, and then find the result of that calculation.

__Solution guide__

a) 4 + 3 = 7

b) 10 – 3 = 7

### 1.4. Textbook Exercises Page 88

Lesson 1 page 88

Calculate:

1 + 9 = 2 + 8 = 3 + 7 = 4 + 6 = 5 + 5 =

10 – 1 = 10 – 2 = 10 – 3 = 10 – 4 = 10 – 5 =

6 + 4 = 7 + 3 = 8 + 2 = 9 + 1 = 10 + 0 =

10 – 6 = 10 – 7 = 10 – 8 = 10 – 9 = 10 – 0 =

__Solution method__

Repeat addition and subtraction operations within 10 and fill in the blanks with the results.

__Solution guide__

1 + 9 = 10 2 + 8 = 10 3 + 7 = 10 4 + 6 = 10 5 + 5 = 10

10 – 1 = 9 10 – 2 = 8 10 – 3 = 7 10 – 4 = 6 10 – 5 = 5

6 + 4 = 10 7 + 3 = 10 8 + 2 = 10 9 + 1 = 10 10 + 0 = 10

10 – 6 = 4 10 – 7 = 3 10 – 8 = 2 10 – 9 = 1 10 – 0 = 10

Lesson 2 page 88

Number?

__Solution method__

– Perform calculations from left to right and then fill in the results in the blank cells.

– Find the missing number of each calculation so that the result is 5.

__Solution guide__

Lesson 3 page 88

Put the appropriate <, >, = signs in the dot.

10….3 + 4 8….2 + 7 7…..7 – 1

9….. 7 + 2 10….1 + 9 2 + 2 ….4 – 2

6 – 4….6 + 3 5 + 2….2 + 4 4 + 5 ….5 + 4

__Solution method__

– Calculate the value of each side.

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

__Solution guide__

10 > 3 + 4 8 < 2 + 7 7 > 7 – 1

9 = 7 + 2 10 = 1 + 9 2 + 2 > 4 – 2

6 – 4 < 6 + 3 5 + 2 > 2 + 4 4 + 5 = 5 + 4

Lesson 4 page 88

Write the appropriate calculation

Group 1: 6 friends.

Group 2: 4 friends.

Both groups: ….you?

__Solution method__

Write the calculation to add the number of people of group 1 and group 2 given and find the result.

__Solution guide__

Both groups have friends: 6 + 4 = 10.

### 1.5. Solve the textbook exercises page 89

Lesson 1 page 89

Write the appropriate number (in the form):

__Solution method__

Count the number of dots in each box and write the appropriate number.

__Solution guide__

Lesson 2 page 89

Read numbers from 0 to 10, from 10 to 0.

__Solution guide__

Students read the numbers from 0 to 10, from 10 to 0

Lesson 3 page 89

Calculate:

__Solution method__

Perform addition or subtraction within 10 and then enter the result.

__Solution guide__

Lesson 4 page 89

Number?

__Solution method__

Perform the calculation from left to right and then fill in the result in the empty box.

__Solution guide__

Lesson 5 page 89

Write the appropriate calculation

a) Yes: 5 fruits

Extra: 3 fruit

There are all:…. fruit?

b) Yes: 7 marbles

Less: 3 marbles

Also: …. marbles?

__Solution method__

– Determine the given information and requirements of the problem.

a) Write a calculation we take the number of fruits we have plus the number of added fruits and then find the result of the calculation.

b) Write the calculation, we subtract the number of marbles we have and then find the result.

__Solution guide__

a) 5 + 3 = 8

b) 7 – 3 = 4

### 1.6. Textbook Exercises Page 90

Lesson 1 page 90

Number ?

2 = 1 + … 6 = 2 + … 8 = …+ 3 10 = 8 + ….

3 = 1 + … 6 =…+ 3 8 = 4 + …. 10 = …+ 3

4 = …+1 7 = 1 + … 9 = …+1 10 = 6 + …

4 = 2 + … 7 = …+ 2 9 = …+ 3 10 = …+ 5

5 = …+1 7 = 4 + …. 9 = 7 +…. 10 = 10 + …

5 = 3 +…. 8 = …+1 9 = 5 + … 10 = 0 + …..

6 = …+1 8 = 6 + … 10 = …+1 1 = 1 + ….

__Solution method__

Mentally add numbers within 10 and fill in the blanks with the missing number.

__Solution guide__

2 = 1 + 1 6 = 2 + 4 8 = 5 + 3 10 = 8 + 2

3 = 1 + 2 6 = 3 + 3 8 = 4 + 4 10 = 7 + 3

4 = 3 + 1 7 = 1 + 6 9 = 8 + 1 10 = 6 + 4

4 = 2 + 2 7 = 5 + 2 9 = 6+ 3 10 = 5 + 5

5 = 4 + 1 7 = 4 + 3 9 = 7 + 2 10 = 10 + 0

5 = 3 + 2 8 = 7 + 1 9 = 5 + 4 10 = 0 + 10

6 = 5 + 1 8 = 6 + 2 10 = 9 + 1 1 = 1 + 0

Lesson 2 page 90

Write the numbers 7, 5, 2, 9, 8:

a) In order from smallest to largest: ……………………………………………………….. ………….

b) In order from largest to smallest: …………………………………………………… ………….

__Solution method__

Compare numbers, counting forward from 0 to 10; The number that counts first has the smaller value.

__Solution guide__

a) In order from smallest to largest: 2, 5, 7, 8, 8.

b) In order from largest to smallest: 9, 8, 7, 7, 5, 2.

Lesson 3 page 90

Write the appropriate calculation

a)

There are all:…….flowers?

b) Yes: 7 flags

Less: 2 flags

Also: …. the flag?

__Solution method__

a) Count the number of flowers available and added.

Write the calculation to add the number of flowers already present with the number of flowers added and find the result.

b) Write a calculation to subtract the number of flags you have, then find the result.

__Solution guide__

a) Fill in the blanks as: 4 + 3 = 7.

b) Fill in the blanks as: 7 – 2 = 5.

### 1.7. Textbook Exercises Page 91

Lesson 1 page 91

Match the dots in order:

__Solution method__

Count and concatenate numbers from 0 to 10 respectively.

__Solution guide__

Lesson 2 page 91

Calculate:

a)

b) 4 + 5 – 7 = 6 – 4 + 8 = 10 – 9 + 6 = 9 – 4 – 3 =

1 + 2 + 6 = 3 + 2 + 4 = 8 – 2 + 4 = 8 – 4 + 3 =

3 – 2 + 9 = 7 – 5 + 3 = 3 + 5 – 6 = 2 + 5 – 4 =

__Solution method__

a) Perform the calculation within 10 and then fill in the blank with the result.

b) Calculated in order from left to right.

__Solution guide__

a)

b) 4 + 5 – 7 = 2 6 – 4 + 8 = 10 10 – 9 + 6 = 7 9 – 4 – 3 = 2

1 + 2 + 6 = 9 3 + 2 + 4 = 9 8 – 2 + 4 = 10 8 – 4 + 3 = 7

3 – 2 + 9 = 10 7 – 5 + 3 = 5 3 + 5 – 6 = 2 2 + 5 – 4 = 3

Lesson 3 page 91

Fill in the blanks with appropriate <, >, = signs:

0….1 3 + 2 …. 2 + 3 5 – 2 ….6 – 2

10…9 7 – 4….2 + 2 7 + 2….6 + 2

__Solution method__

– Calculate the value of both sides.

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

__Solution guide__

0 < 1 3 + 2 = 2 + 3 5 - 2 < 6 - 2

10 > 9 7 – 4 < 2 + 2 7 + 2 > 6 + 2

Lesson 4 page 91

Write the appropriate calculation

__Solution method__

– Count the number of animals in each box and determine which animals are adding or subtracting.

– Write calculations and find the results.

__Solution guide__

Lesson 5 page 91

Arrange the image according to the form below:

Students form their own pictures.

### 1.8. Textbook Exercises Page 92

Lesson 1 page 92

Calculate

a)

b) 8 – 5 – 2 = 10 – 9 + 7 = 9 – 5 + 4 = 10 + 0 – 5 =

4 + 4 – 6 = 2 + 6 + 1 = 6 – 3 + 2 = 7 – 4 + 4 =

__Solution method__

– Perform addition or subtraction of numbers.

– Calculated in order from left to right.

__Solution guide__

a)

b) 8 – 5 – 2 = 1 10 – 9 + 7 = 8 9 – 5 + 4 = 8 10 + 0 – 5 = 5

4 + 4 – 6 = 2 2 + 6 + 1 = 9 6 – 3 + 2 = 5 7 – 4 + 4 = 7

Lesson 2 page 92

Number?

8 = …+ 5 9 = 10 – …. 7 = …+ 7

10 = 4 +…. 6 = ….+ 5 2 = 2 – ….

__Solution method__

Repeat addition and subtraction within 10 and fill in the missing number.

__Solution guide__

8 = 3 + 5 9 = 10 – 1 7 = 0 + 7

10 = 4 + 6 6 = 1 + 5 2 = 2 – 0.

Lesson 3 page 92

In the numbers 6, 8, 4, 2, 10:

a) Which number is the largest?

b) Which number is the smallest?

__Solution method__

Compare then find the number with the largest or smallest value.

__Solution guide__

We have: 2 < 4 < 6 < 8 < 10

a) The largest number is 10.

b) The smallest number is 2.

Lesson 4 page 92

Write the appropriate calculation

Yes: 5 fish

Extra: 2 fish

There are all: ….the fish ?

__Solution method__

Write the calculation to add the number of fish you have with the number of fish added and find the result.

__Solution guide__

The proper calculation is: 5 + 2 = 7

Lesson 5 page 92

In the picture below

How many triangles are there?

__Solution method__

Count the number of triangles in the given figure, you can write the count in each shape so that there is no omission.

__Solution guide__

The given figure has 8 triangles.

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