20% of 20% of 300 =
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20% of 20% of 300%
\(20\%.20\%.300\%=\frac{20}{100}.\frac{20}{100}.\frac{300}{100}=\frac{20.20.300}{100.100.100}=\frac{120000}{1000000}=0,12\)
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LUYỆN VIOLYMPIC TIẾNG ANH LỚP 4 (2021-2022)Câu 1: The sum of all one digit numbers?Câu 2: Which value is not equal to 4500? (45tens, 450tens, 45 hundred)Câu 3: Which number below is the word form of 20 300?Câu 4: How many two digit odd numbers are there that are greater than 15?Câu 5: Lily writers a number. It has the digit 5 in the thousands place and the digit 8 in the units place. Which of these numbers could Lily have written?Câu 6: What is the smallest posible number that can be written usi...
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LUYỆN VIOLYMPIC TIẾNG ANH LỚP 4 (2021-2022)
Câu 1: The sum of all one digit numbers?
Câu 2: Which value is not equal to 4500? (45tens, 450tens, 45 hundred)
Câu 3: Which number below is the word form of 20 300?
Câu 4: How many two digit odd numbers are there that are greater than 15?
Câu 5: Lily writers a number. It has the digit 5 in the thousands place and the digit 8 in the units place. Which of these numbers could Lily have written?
Câu 6: What is the smallest posible number that can be written using the digits 4, 7, 0, 6? (use each digit only once)
Câu 7: If the sum of three consecutive natural numbers is less than 90, find the largest possible value of the largest natural number is?
Câu 8: How many multiples of 4 lie between 1000 and 2500?
Câu 9: Read number: 35 206 :...........................................................
Câu 10: Jack finished the bicycle race with a time of 34152 seconds, Jane finished with a time of 34215 seconds, and Tina finished with a time of 34125 seconds. In what order did they finish the race?
Câu 11: The The greatest odd number that can be formed by all the digit 1,2,0 and 8 is?
Câu 12: A rectangle having length and breadth are 25cm and 8cm respectively. The perimeter of the rectangle?
Câu 13: Amy put 50 photographs into an online photo album. On each page she could fit eight photos. How many photos were on the last page?
Câu 14: Bon is 5 years old. Ben’s age is 3 years more than the double of Bon’s age. Find the age of Ben?
Câu 15: Which value is equal to 56 hundreds? (56000; 5600 tens; 560 tens; 56 units)
Câu 16:What is the perimeter of a square with side lengths of 205 cm?
Câu 17: What is the greatest 3-digit number whose digits total is 13?
Câu 18: Anna has a chocolate chip cookie recipe that makes 60 cookies and calls for 6cups of flour. If he only wants to make 40 cookies. How many cups of flour would he need?
Câu 19: A string of 5m35cm was cut into 5 equal parts. What’s the length of each part in cm?
Giúp mình với!
Câu 1: The sum of all one digit numbers?
1+2+3+4+...+9=45
Câu 2: Which value is not equal to 4500? (45tens, 450tens, 45 hundred)
45tens
Câu 3: Which number below is the word form of 20 300?
twenty thousand and three hundred
Câu 4: How many two digit odd numbers are there that are greater than 15?
17; 19; 21; .....; 99=> (99-17):2+1=83 numbers
Câu 5: Lily writers a number. It has the digit 5 in the thousands place and the digit 8 in the units place. Which of these numbers could Lily have written?
5008
Câu 6: What is the smallest posible number that can be written using the digits 4, 7, 0, 6? (use each digit only once)
0476( because it doesn't talk that the number need 4 digits)
Câu 7: If the sum of three consecutive natural numbers is less than 90, find the largest possible value of the largest natural number is?
n;n+1;n+2 => 90:3=30-> n+1=30=> n=29=>n+2=31
Câu 8: How many multiples of 4 lie between 1000 and 2500?
=> 1000\(\le\)x\(\le\)2500=> There are 376 numbers is the multiples of 4
Câu 9: Read number: 35 206 :.thirty five thousand two hundred and six
Câu 10: Jack finished the bicycle race with a time of 34152 seconds, Jane finished with a time of 34215 seconds, and Tina finished with a time of 34125 seconds. In what order did they finish the race?
The same order
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câu 1: 45
câu 2:450 tens
câu 4:42
câu 6:4067
Given 20 points. Draw the lines through the 2 points of these 20 points. How many lines are there if only 3 of 20 points are aligned?
Nguyễn Cao Cường đã làm đúng nhưng cách giả đâu
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the area of the rectangle is x if the length of the rectangle is increased by 20% and the width of the rectangle is decreased by 10%, the area of the rectangle is increased by 20 m2 find x
the area of the rectangle aftter the length of the rectangle is increased by 20% is :
\(x.\left(100\%+20\%\right)=x.120\%\)
the area of the rectangle aftter the width of the rectangle is decreased by 10% is :
\(x.120\%.\left(100\%-10\%\right)=x.120\%.90\%=x.108\%\)
so the area of the rectangle is increased by 20 m2 equivalent \(x.8\%\)
\(\Rightarrow x=20:8\%=250\)m2
dịch ra tiếng việt được ko
diện tích hình chữ nhật là x nếu tăng chiều dài 20% và giảm chiều rộng 10% thì diện tích hình chữ nhật tăng thêm 20 m2 tìm x
Given 20 points. Draw the lines through the 2 points of these 20 points. How many lines are there if only 3 of 20 points are aligned?
Answer: There are ... lines.
Dịch: Cho 20 điểm. Vẽ đường đi qua 2 điểm trong số 20 điểm này. Có bao nhiêu đường nếu chỉ có 3 trong số 20 điểm đó thẳng hàng?
Trả lời: Có ... đường thẳng
Find 20 percent of 15 percent of the smallest 4 digit number
20+25+20+100+200+300+400+25+25+25+20+20+20=?
20 + 25 + 20 + 100 + 200 + 300 + 400 + 25 + 25 + 25 + 20 + 20 + 20
= 20 x 5 + 25 x 4 + 100 + 100 x 2 + 100 x 3 + 100 x 4
= 100 x 1 + 100 x 1 + 100 x 1 + 100 x 2 + 100 x 3 + 100 x 4
= 100 x ( 1 + 1 + 1 + 2 + 3 + 4 )
= 100 x 12
= 1200
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In the library, 9/20 of the books are textbooks . 7/20 are story books and the rest are teacher's books . What percentage of library books does the teacher's books account for?
mik ko hiểu tiếng anh bn phải dăng câu hỏi là môn toán mới đúng
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ko hiểu đề lắm :
câu này ne : What percentage of library books does the teacher's books account for?
???
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The percentage of teacher's books in the library is: (1 - 9/20 - 7/20) x 100% = 20%
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The price of a pair of shoes is 36.4 dollars after a 20% discount. Find the original price of a pair of shoes.
nhanh nhé, mk tick cho