WorksheetsAddition of Natural Numbers
Total questions: 97
Worksheet time: 49mins
Calculate the sum: 822,305 + 143,484 = ______
965,789
955,789
965,799
965,788
Calculate the sum: 6,394,814 + 102,043 = ______
6,496,857
6,496,953
6,497,857
6,494,857
Calculate the sum: 723,575 + 823,918 = ______
1,547,493
1,547,483
1,547,403
1,547,393
Calculate the sum: 29,126,524 + 3,310,662 = ______
32,437,186
31,437,186
33,437,186
32,447,186
Estimate the sum: 5,000 + 6,000 + 5,000 = ______
16,000
15,000
17,000
18,000
Estimate the sum: 4,000 + 60,000 + 6,000 = ______
70,000
60,000
80,000
66,000
Estimate the sum: 90,000 + 80,000 + 20,000 = ______
190,000
170,000
200,000
180,000
Estimate the sum: 20,000 + 10,000 + 80,000 + 90,000 = ______
200,000
180,000
210,000
150,000
1. Calculate conveniently. a) 350,000 + 470,000 + 150,000 + 30,000 = ______ b) 280,000 + 640,000 + 360,000 + 720,000 = ______ c) 590,000 + 19,000 + 81,000 + 410,000 = ______
1,000,000 2,000,000 1,100,000
900,000 1,800,000 1,000,000
950,000 1,900,000 1,050,000
1,050,000 1,950,000 1,150,000
a) 4,800,000 = 5,000,000 - ______ b) ? - 700,000 = 7,300,000
200,000 8,000,000
300,000 7,000,000
100,000 7,500,000
400,000 7,900,000
In one year, the Green Milk Farm uses 240,000 tons of straw; the Red Milk Farm uses 12,000 tons more straw than the Green Milk Farm. How many tons of straw do both farms use in total for feeding cows?
492,000 tons
252,000 tons
480,000 tons
492,500 tons
Challenge: When hearing the report on the number of dairy cows in Hanoi, Lam Dong, and Thanh Hoa, Tien only managed to write down the following numbers: 24,410 cows 15,443 cows 11,765 cows. Knowing that: - The total number of dairy cows in Hanoi and Lam Dong is 39,853 cows. - The total number of dairy cows in Lam Dong and Thanh Hoa is 36,175 cows. Hỏi: Số bò sữa ở Hà Nội là bao nhiêu?
24,410
15,443
11,765
28,088
Calculate the result: 764,933 - 241,532 = ______
523,401
533,401
523,501
522,401
Calculate the result: 6,952,173 - 712,041 = ______
6,240,132
6,140,132
6,250,132
6,230,132
Calculate the result: 875,168 - 684,352 = ______
190,816
210,816
180,816
200,816
Calculate the result: 37,159,645 - 2,613,914 = ______
34,545,731
35,545,731
34,445,731
33,545,731
Calculate mentally: 50,000 - 20,000 + 400,000 = ______
430,000
420,000
400,000
430,400
Calculate mentally: 970,000 - (60,000 + 10,000) = ______
900,000
890,000
910,000
960,000
Calculate mentally: 730,000 - 30,000 - 400,000 = ______
300,000
200,000
400,000
330,000
Calculate mentally: 400,000 + (90,000 - 60,000 - 30,000) = ______
400,000
420,000
490,000
370,000
Số bị trừ | 672,918 | ? | 528,661 Số trừ | 461,705 | 32,938 | ? Hiệu | ? | 495,723 | 495,723 Calculate the missing values.
Số bị trừ (2nd column): 528,661 Số trừ (3rd column): 32,938 Hiệu (1st column): 211,213
Số bị trừ (2nd column): 461,705 Số trừ (3rd column): 528,661 Hiệu (1st column): 32,938
Số bị trừ (2nd column): 495,723 Số trừ (3rd column): 672,918 Hiệu (1st column): 528,661
Số bị trừ (2nd column): 672,918 Số trừ (3rd column): 495,723 Hiệu (1st column): 32,938
Ai còn lại nhiều tiền hơn là:
Người A
Người B
Người C
Người D
Số lượt khách đến tham quan, nghỉ dưỡng tại Đà Lạt năm 2021 là bao nhiêu?
1,500,000 lượt
2,000,000 lượt
3,000,000 lượt
4,500,000 lượt
8 7 4 2 + 3 6 4 2 -----------
The missing digits are: 8, 7, 4, 2, 3, 6, 4, 2, 1, 6, 7, 8, 6, 1.
The missing digits are: 8, 7, 4, 2, 3, 6, 4, 2, 2, 5, 7, 8, 6, 1.
The missing digits are: 8, 7, 4, 2, 3, 6, 4, 2, 1, 6, 7, 8, 5, 2.
The missing digits are: 8, 7, 4, 2, 3, 6, 4, 2, 1, 6, 7, 9, 6, 1.
2 5 1 3 7 - 6 2 0 2 4 ----------- 1 9 1 1 3
The missing digits are: 2, 5, 1, 3, 7, 6, 2, 0, 2, 4, 1, 9, 1, 1, 3.
The missing digits are: 1, 5, 1, 3, 7, 6, 2, 0, 2, 4, 1, 9, 1, 1, 3.
The missing digits are: 2, 5, 1, 3, 7, 6, 2, 0, 2, 4, 1, 8, 1, 1, 3.
The missing digits are: 2, 5, 1, 3, 7, 6, 2, 0, 2, 4, 1, 9, 1, 2, 3.
The sum of two numbers is 15, and the difference between the two numbers is 3. Find the two numbers.
Large number: 9, Small number: 6.
Large number: 8, Small number: 7.
Large number: 10, Small number: 5.
Large number: 12, Small number: 3.
Given: The sum of two numbers is 15, and the difference between the two numbers is 3. Find the two numbers. (Method 2)
Large number: 9, Small number: 6.
Large number: 8, Small number: 7.
Large number: 10, Small number: 5.
Large number: 12, Small number: 3.
If you add 3 to the smaller number, what will the smaller number be? What will the sum of the two numbers be?
The smaller number will be 9. The sum of the two numbers will be 18.
The smaller number will be 12. The sum of the two numbers will be 24.
The smaller number will be 6. The sum of the two numbers will be 15.
The smaller number will be 8. The sum of the two numbers will be 20.
Large number = (____ + ____) / 2 Small number = (____ - ____) / 2
Large number = (Sum + Difference) / 2 Small number = (Sum - Difference) / 2
Large number = (Sum - Difference) / 2 Small number = (Sum + Difference) / 2
Large number = (Difference + Difference) / 2 Small number = (Sum - Sum) / 2
Large number = (Sum + Sum) / 2 Small number = (Difference - Difference) / 2
To find two numbers when you know their sum and difference, you can also use:
Small number = Large number - ____
Difference
Sum
Product
Quotient
Find two numbers when their sum and difference are given (as shown in the table below): | Sum | 42 | 135 | 2700 | 9 | | Difference | 12 | 15 | 900 | 7 | | Smaller number | ? | ? | ? | ? | | Larger number | 27 | ? | ? | ? |
Row 1: Smaller number = 15, Larger number = 27 Row 2: Smaller number = 60, Larger number = 75 Row 3: Smaller number = 900, Larger number = 1800 Row 4: Smaller number = 1, Larger number = 8
Row 1: Smaller number = 30, Larger number = 12 Row 2: Smaller number = 50, Larger number = 85 Row 3: Smaller number = 1000, Larger number = 1700 Row 4: Smaller number = 2, Larger number = 7
Row 1: Smaller number = 20, Larger number = 22 Row 2: Smaller number = 65, Larger number = 70 Row 3: Smaller number = 800, Larger number = 1900 Row 4: Smaller number = 3, Larger number = 6
Row 1: Smaller number = 10, Larger number = 32 Row 2: Smaller number = 55, Larger number = 80 Row 3: Smaller number = 850, Larger number = 1850 Row 4: Smaller number = 4, Larger number = 5
Class 4A has 35 students. The number of girls is 1 more than the number of boys. How many girls and how many boys are there in class 4A?
18 girls and 17 boys
20 girls and 15 boys
17 girls and 18 boys
19 girls and 16 boys
Team 1 and Team 2 together harvested 65 kg of vegetables. Team 1 harvested 7 kg more than Team 2. How many kilograms of vegetables did Team 1 harvest?
36 kg
29 kg
37 kg
31 kg
Grade 4 and Grade 5 together collected 2000 recycled boxes. Grade 4 collected 200 more boxes than Grade 5. How many boxes did each grade collect?
Grade 4: 1100 boxes, Grade 5: 900 boxes
Grade 4: 1200 boxes, Grade 5: 800 boxes
Grade 4: 1000 boxes, Grade 5: 1000 boxes
Grade 4: 900 boxes, Grade 5: 1100 boxes
A rectangular garden has a perimeter of 172 m. The length is 22 m more than the width. What are the length and width of the garden?
Length: 54 m, Width: 32 m
Length: 47 m, Width: 25 m
Length: 60 m, Width: 38 m
Length: 50 m, Width: 28 m
Help your friend calculate his grandfather's age. The grandfather says: 'Five years ago, my age was seven times your age. Now, my age plus your age is 117.' What is the grandfather's age?
84
77
65
70
Calculate the following: a) 148 213 + 401 564 624 175 + 459 607
148 213 + 401 564 = 549 777 624 175 + 459 607 = 1 083 782
148 213 + 401 564 = 549 777 624 175 + 459 607 = 1 083 782 624
148 213 + 401 564 = 549 777 624 175 + 459 607 = 1 084 782
148 213 + 401 564 = 549 777 624 175 + 459 607 = 1 083 872
Calculate the following: b) 624 175 – 413 061 4258 179 – 809 083
624 175 – 413 061 = 211 114 4 258 179 – 809 083 = 3 449 096
624 175 – 413 061 = 201 114 4 258 179 – 809 083 = 3 459 096
624 175 – 413 061 = 211 114 4 258 179 – 809 083 = 3 459 096
624 175 – 413 061 = 201 114 4 258 179 – 809 083 = 3 449 096
?. + 6600 + 2200 = 5000
-3800
-1400
-5000
-1000
Calculate the area of each color.
Red: 12 cm², Blue: 8 cm², Green: 10 cm²
Red: 10 cm², Blue: 12 cm², Green: 8 cm²
Red: 8 cm², Blue: 10 cm², Green: 12 cm²
Red: 10 cm², Blue: 8 cm², Green: 12 cm²
There are 10 boxes of colored pencils, each box has 18 pencils. How many pencils are there in total?
180
188
108
28
Calculate: 17 × 10 = ?
170
180
107
117
Calculate: 113 × 10 = ?
1130
1103
1013
1301
Calculate: 810 ÷ 10 = ?
81
810
8.1
80
Calculate: 234 × 100 = ?
23400
2340
234000
23000
Calculate: 7000 ÷ 100 = ?
70
700
7
70000
Calculate: 570 × 1000 = ?
570000
57000
5700
570
Calculate: 15 000 ÷ 1000 = ?
15
150
1.5
1500
17 m = ? dm
170 dm
17 dm
1.7 dm
1700 dm
30 dm = ? m
3 m
0.3 m
30 m
300 m
136 m = ? cm
13600 cm
1360 cm
136 cm
136000 cm
52 000 cm = ? m
520 m
5 200 m
52 m
5.2 m
8 m = ? mm
8000 mm
800 mm
80 mm
8 mm
91 000 mm = ? m
91 m
910 m
9.1 m
0.91 m
Đặt tính rồi tính. a) 33 × 40 = ?
1320
1200
1330
1420
Đặt tính rồi tính. b) 314 × 50 = ?
15700
16200
15400
16000
Đặt tính rồi tính. c) 1020 × 90 = ?
91800
92000
90000
91000
Số? a) 1 giờ = ?. phút
60
30
45
90
Số? a) 24 giờ = ?. phút
1440
1240
1560
1200
Số? b) 1 phút = ?. giây
60
100
30
45
Số? b) 1 giờ = ?. giây
3600
1800
6000
1200
Một đơn vị bộ đội đã tặng sữa cho học sinh Trường Tiểu học Bản Đông hai lần. Lần thứ nhất 40 thùng, lần thứ hai 60 thùng. Mỗi thùng sữa đều có 24 hộp. Đơn vị bộ đội đó đã tặng cho học sinh tất cả bao nhiêu hộp sữa?
2400
2040
2460
2240
Calculate the following:
2542
1242
1789
3021
2150
Calculate the following: a) 176 × 32 = ? b) 1042 × 57 = ?
5632 b) 59494
5632 b) 60494
5732 b) 59494
5632 b) 58494
2. Mental calculation: a) 5 × 9 × 200 = ? b) 9 × 1,000 = ?
9,000 9,000
8,000 10,000
5,000 9,000
7,000 8,000
3. Mental calculation: a) 7 × 50 × 20 = ? b) 80 × 1,000 × 4 = ?
7,000 b) 320,000
6,000 b) 400,000
7,000 b) 400,000
6,000 b) 320,000
4. Mental calculation: 3 × 40 × 50 = ?
6,000
4,000
5,000
7,000
The value of the expression 20,740 × 35 is:
7,259
72,590
725,900
7,259,000
A rectangular garden has a length of 27 m and a width of 15 m. What is the area of the garden?
405 m²
315 m²
372 m²
420 m²
In 30 days, 12 cows give Mr. Tu how many kilograms of milk if each cow gives an average of 26 kg of milk per day?
9,360 kg
8,760 kg
7,800 kg
10,400 kg
Calculate mentally.
830
71,000
9,200
1,500
6,200,000
Convert the following units: a) 1 m² = ? dm² b) 24 m² = ? dm² c) 500 dm² = ? m² d) 892 m² = ? cm² e) 300,000 cm² = ? m²
a) 100 dm² b) 240 dm² c) 5 m² d) 8,920,000 cm² e) 30 m²
a) 10 dm² b) 2,400 dm² c) 50 m² d) 892,000 cm² e) 3,000 m²
a) 1,000 dm² b) 24,000 dm² c) 0.5 m² d) 89,200,000 cm² e) 300 m²
a) 1 dm² b) 2,400 dm² c) 500 m² d) 892,000 cm² e) 3 m²
Calculate the following: a) 812 × 46 b) 816 × 42 c) 6,320 × 26 d) 2,970 × 38
37,352 b) 34,272 c) 164,320 d) 112,860
37,352 b) 34,272 c) 164,320 d) 102,860
37,352 b) 34,272 c) 154,320 d) 112,860
36,352 b) 34,272 c) 164,320 d) 112,860
Calculate using convenient methods.
76,000
1,200,000
2,100
3,564
How many tiles of each type does Mr. Tu use to tile the room?
Mr. Tu uses 20 square tiles and 30 rectangular tiles.
Mr. Tu uses 25 square tiles and 25 rectangular tiles.
Mr. Tu uses 15 square tiles and 35 rectangular tiles.
Mr. Tu uses 10 square tiles and 40 rectangular tiles.
Mentally multiply the following numbers by 11. State the pattern you observe.
34 × 11 = 374 28 × 11 = 308 11 × 95 = 1,045 Pattern: The product of a two-digit number and 11 is the sum of the digits placed between them (if the sum is less than 10), otherwise, carry over.
34 × 11 = 344 28 × 11 = 288 11 × 95 = 1,045 Pattern: The product of a two-digit number and 11 is the difference of the digits placed between them.
34 × 11 = 374 28 × 11 = 308 11 × 95 = 1,045 Pattern: The product of a two-digit number and 11 is the digits reversed and added together.
34 × 11 = 374 28 × 11 = 308 11 × 95 = 1,045 Pattern: The product of a two-digit number and 11 is the digits multiplied and placed between them.
Calculate the following:
8
3
20
340
120 phút = ? giờ
2 giờ
1 giờ
3 giờ
1.5 giờ
1080 phút = ? giờ
18 giờ
10 giờ
12 giờ
20 giờ
300 giây = ? phút
5 phút
3 phút
10 phút
30 phút
3600 giây = ? phút = ? giờ
60 phút = 1 giờ
30 phút = 1 giờ
120 phút = 1 giờ
45 phút = 1 giờ
720 : 60 = 720 : (? × 6) = (720 : ?) : 6 = ? : 6 = ?
? = 10, ? = 12, ? = 2
? = 8, ? = 14, ? = 4
? = 6, ? = 18, ? = 3
? = 5, ? = 20, ? = 1
Calculate the following (as per the example):
450 : (5 × 3) = 30
9000 : (9 × 2) = 500
450 : (5 × 3) = 45
9000 : (9 × 2) = 450
450 : (5 × 3) = 15
9000 : (9 × 2) = 1000
450 : (5 × 3) = 27
9000 : (9 × 2) = 100
Estimate the quotient for the following division: 56 : 23
Approximately 2
Approximately 1
Approximately 3
Approximately 4
Estimate the quotient for the following division: 84 : 32
Approximately 3
Approximately 1
Approximately 5
Approximately 10
Estimate the quotient for the following division: 77 : 18
Approximately 4
Approximately 2
Approximately 5
Approximately 6
Estimate the quotient for the following division: 68 : 59
Approximately 1
Approximately 2
Approximately 5
Approximately 10
Estimate the quotient for the following division: 695 : 75
Approximately 9
Approximately 7
Approximately 11
Approximately 5
Estimate the quotient for the following division: 110 : 36
Approximately 3
Approximately 2
Approximately 4
Approximately 5
Estimate the quotient for the following division: 167 : 87
Approximately 2
Approximately 1
Approximately 3
Approximately 4
Estimate the quotient for the following division: 292 : 41
Approximately 7
Approximately 5
Approximately 9
Approximately 11
A primary school needs to rent a number of cars to transport 232 fourth-grade students for a field trip. If each car can carry 45 students, how many cars does the school need to rent at least?
6
4
5
7
A primary school needs to rent a number of cars to transport 232 fourth-grade students for a field trip. If each car can carry 26 students, how many cars does the school need to rent at least?
9
8
10
11
2. Division by a number. a) Calculate and compare the values of the two expressions: (63 + 49) : 7 and 63 : 7 + 49 : 7.
(63 + 49) : 7 = 16, 63 : 7 + 49 : 7 = 16. The values are equal.
(63 + 49) : 7 = 16, 63 : 7 + 49 : 7 = 18. The values are not equal.
(63 + 49) : 7 = 14, 63 : 7 + 49 : 7 = 16. The values are not equal.
(63 + 49) : 7 = 16, 63 : 7 + 49 : 7 = 14. The values are not equal.
2. Division by a number. b) Calculate: (48 + 24) : 4.
18
12
24
16
2. Division by a number. b) Calculate: (81 + 27) : 9.
12
9
15
10
2. Division by a number. b) Calculate: (600 + 90 + 3) : 3.
231
233
213
321
