Môn toán lớp 2D
Bài luyện tập
(trang 39)
Hướng dẫn
Bài 1 a,b: Làm vào sách giáo khoa
Bài 3: Làm vào sách giáo khoa

Bài 4: Giải vào vở ô li
Bài 1: tính nhẩm
1
Bài 1: tính nhẩm
9 + 6 =

6 + 9 =
a,
7 + 8 =

8 + 7 =
6 + 5 =

5 + 6 =
3 + 9 =

9 + 3 =
b,
3 + 8 =

5 + 8 =
4 + 8 =

4 + 7 =
2 + 9 =

5 + 9 =
6 + 7 =

7 + 7 =
15
15
15
15
11
11
12
12
13
11
11
12
11
14
13
14
Khi thay đổi vị trí các số hạng thì tổng không thay đổi
Bài 3: tính
2
36
+
36


Bài 3: tính
35
+
47

69
+
8

9
+
57

27
+
18

2
7
2
8
7
7
7
6
4
5
Giải bài toán sau
4
Bài 4:
Mẹ hái :
38 quả bưởi
Chị hái :
16 quả bưởi
Mẹ và chị hái :
… quả bưởi?

Đúng ghi Đ
Sai ghi S
Câu 1

S
46
+
24


60
46
+
24


70
Câu 2

S
6
+
27


87
6
+
27


33
Câu 3

S
68
+
8


78
68
+
8


76
Câu 4

Đ
47
+
24


71





A picture is worth a thousand words
A complex idea can be conveyed with just a single still image, namely making it possible to absorb large amounts of data quickly.
Quotations are commonly printed as a means of inspiration and to invoke philosophical thoughts from the reader.
Bring the attention of your audience over a key concept using icons or illustrations
Big concept
White
Is the color of milk and fresh snow, the color produced by the combination of all the colors of the visible spectrum.
You can also split your content
Black
Is the color of coal, ebony, and of outer space. It is the darkest color, the result of the absence of or complete absorption of light.
In two or three columns
Yellow
Is the color of gold, butter and ripe lemons. In the spectrum of visible light, yellow is found between green and orange.
Blue
Is the colour of the clear sky and the deep sea. It is located between violet and green on the optical spectrum.
Red
Is the color of blood, and because of this it has historically been associated with sacrifice, danger and courage.
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Yellow
Is the color of gold, butter and ripe lemons. In the spectrum of visible light, yellow is found between green and orange.
Blue
Is the colour of the clear sky and the deep sea. It is located between violet and green on the optical spectrum.
Red
Is the color of blood, and because of this it has historically been associated with sacrifice, danger and courage.
Yellow
Is the color of gold, butter and ripe lemons. In the spectrum of visible light, yellow is found between green and orange.
Blue
Is the colour of the clear sky and the deep sea. It is located between violet and green on the optical spectrum.
Red
Is the color of blood, and because of this it has historically been associated with sacrifice, danger and courage.
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