Solving exercises on pages 9 and 10 of Math Grade 3 Workbook, book Connecting Knowledge with Life

Explore more great Math 3 learning resources:
- Check out the complete set of Solving Math Grade 3 Connecting Knowledge with Life
- Solving Math Grade 3 pages 9, 10 Workbook 1, book Creative Horizon - Reviewing addition and subtraction
- Solving Math Grade 3 pages 8, 9 Workbook 1, book Kite - Reviewing addition and subtraction within the range of 1000

Solving Math Grade 3 pages 9, 10 book Connecting Knowledge with Life Workbook Volume 1

Solving exercises on pages 9 and 10 of Math Grade 3 Workbook, book Connecting Knowledge with Life:

Reviewing addition and subtraction within the range of 1000

Practice Section 1

1. Solve exercise 1 Page 9 Mathematics Grade 3 Workbook

a) 50 + 40 = 90 b) 500 + 400 = 900 90 - 50 = 40 900 - 500 = 400 90 - 40 = 50 900 - 400 = 500 c) 80 + 20 = 100 d) 300 + 700 = 1,000 100 - 80 = 20 1000 - 700 = 300 100 - 20 = 80 1000 - 300 = 700

a) 50 + 40 = 90 b) 500 + 400 = 900 90 - 50 = 40 900 - 500 = 400 90 - 40 = 50 900 - 400 = 500 c) 80 + 20 = 100 d) 300 + 700 = 1,000 100 - 80 = 20 1000 - 700 = 300 100 - 20 = 80 1000 - 300 = 700

a) 50 + 40 = 90 b) 500 + 400 = 900 90 - 50 = 40 900 - 500 = 400 90 - 40 = 50 900 - 400 = 500 c) 80 + 20 = 100 d) 300 + 700 = 1,000 100 - 80 = 20 1000 - 700 = 300 100 - 20 = 80 1000 - 300 = 700

a) 50 + 40 = 90 b) 500 + 400 = 900 90 - 50 = 40 900 - 500 = 400 90 - 40 = 50 900 - 400 = 500 c) 80 + 20 = 100 d) 300 + 700 = 1,000 100 - 80 = 20 1000 - 700 = 300 100 - 20 = 80 1000 - 300 = 700

48 + 52 = 100 75 + 25 = 100 100 - 26 = 74 100 - 45 = 55

48 + 52 = 100 75 + 25 = 100 100 - 26 = 74 100 - 45 = 55

48 + 52 = 100 75 + 25 = 100 100 - 26 = 74 100 - 45 = 55

48 + 52 = 100 75 + 25 = 100 100 - 26 = 74 100 - 45 = 55

Đáp án:

3. Giải bài 3 Trang 9 SGK Toán lớp 3

35 + 45 = 80 146 + 29 = 175 77 - 59 = 18 394 - 158 = 236

Hướng dẫn giải:
- Bước 1: Đặt tính sao cho các chữ số cùng hàng thẳng cột với nhau.
- Bước 2: Cộng hoặc trừ các chữ số lần lượt từ phải sang trái.

Đáp án:

4. Giải bài 4 Trang 9 SGK Toán lớp 3

Number?

Hướng dẫn giải: Để tìm tổng ta lấy số hạng cộng với số hạng.

Đáp án:

5. Giải bài 5 Trang 9 SGK Toán lớp 3

a) How many kilograms do the buffalo and the goat weigh together?

a) Con trâu và con nghé cân nặng tất cả bao nhiêu ki-lô-gam?

b) How many kilograms heavier is the buffalo than the goat?

Hướng dẫn giải:
a) Cân nặng tất cả của con trâu và con nghé = Cân nặng của con trâu + Cân nặng của con nghé.
b) Con trâu nặng hơn con nghé = Cân nặng của con trâu - Cân nặng của con nghé.

a) The total weight of the buffalo and the goat is:
            650 + 150 = 800 (kg)
b) The buffalo weighs more than the goat by:
             650 - 150 = 500 (kg)
                  Answer: a) 800kg.
                                b) 500kg.

Practice Part 2

1. Giải bài 1 Trang 10 SGK Toán lớp 3

Number?

Difference = Minuend - Subtrahend.

Đáp án:

2. Solve problem 2 on page 10 of Math Grade 3 Workbook

Problem: Number?

Solution:
- Step 1: Calculate the result of the operation according to the arrow.
- Step 2: Write the appropriate result in the blank space.

Answer:
We have:
305 + 105 = 410
410 - 205 = 205

3. Solve problem 3 on page 10 of Math Grade 3 Workbook

Problem: a) Which groups have operations with results greater than 150?
b) Which groups have operations with equal results?

Solution:
- Step 1: Perform addition and subtraction operations.
- Step 2: Compare the results with 150 and answer the questions.

Answer:
We have 135 + 48 = 183 80 + 27 = 107
537 - 361 = 176 25 + 125 = 150
216 - 109 = 107
The groups with operation results greater than 150 are A, C.
The groups with equal operation results are B, E.

4. Solve problem 4 on page 10 of Math Grade 3 Workbook

Problem: At a school, Grade Three has 142 students, and Grade Four has 18 fewer students than Grade Three.
a) How many students are there in Grade Four?
b) How many students are there in both grades combined?

Solution:
a) Number of students in Grade Four = Number of students in Grade Three - 18 students.
b) Number of students in both grades = Number of students in Grade Three + Number of students in Grade Four.

Answer:
a) The number of students in Grade Four is:
            142 - 18 = 124 (students)
b) Both grades together have a total of:
            142 + 124 = 266 (students)
                  Answer: a) 124 students.
                                b) 266 students.

Therefore, through the exercise solutions on pages 9, 10 of Math 3 Workbook Volume 1, Connect Knowledge with Life book, students have learned how to solve problems as well as effectively reinforce their knowledge.