= 1/2 - 1/3 + 1/3 - 1/4 + 1/4 - 1/5 + ... + 1/9 - 1/10
= 1/2 - 1/10
= 2/5
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Toán- Tiếng anh: Giải giúp mình bài này:
find a decimal number number if is decreased by 2,7 the result is increased by 3,5 then the last result is 7,5 ( Write decimal number with the comma between number part and fraction part)
Fill in the blank with the correct numberQuestion 1:Complete the number pattern: 0,3,8,15,24,,48.Question 2:Find the area of the shaded region if A and B are squares of sides 5cm and 8cm respectively. Answer: The area of the shaded region is .(write your answer by decimal in simplest form)Question 3:If , compute .Question 4:The side of each square grid is 2cm. Find the area of the shaded region.Answer: The area of the shaded region is .Question 5:If , find the value of m in .Answer: m.Questio...
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Fill in the blank with the correct number
Question 1:
Complete the number pattern:
0,3,8,15,24,,48.
Question 2:
Find the area of the shaded region if A and B are squares of sides 5cm and 8cm respectively.
Answer: The area of the shaded region is .
(write your answer by decimal in simplest form)
Question 3:
If , compute =.
Question 4:
The side of each square grid is 2cm. Find the area of the shaded region.
Answer: The area of the shaded region is .
Question 5:
If , find the value of m in .
Answer: m=.
Question 6:
How many whole numbers between 1 and 100 are not divisible by 3 or 11?
Answer: numbers.
Question 7:
Evaluate:
=.
(round to four decimal places)
Question 8:
Evaluate:
=.
(write your answer by decimal in simplest form)
Question 9:
Find the whole number A knowing that A is 9 units greater than the average of A, 38, 45 and 67.
Answer: A=.
Question 10:
Find the whole number C knowing that C is 14 units smaller than the average of C, 68, 72, 99.
Answer: C=.
Choose the correct answer. Calculate: 3/4 x 5/4 ? 8/4 15/16 15/4 8/16 Câu hỏi 2: Calculate: 1/2 - 2/5 + 5/3 .... 49/30 52/30 53/30 51/30 Câu hỏi 3: Alices mother is now four times as old as she. Four years ago, her mother was thirty years more than her. How old is Alice now? 12 6 10 8 Câu hỏi 4: Choose the correct answer. Which of the following fractions is greater than 1? 2/3 7/9 11/12 14/8 Câu hỏi 5: Which fraction is equal to 51/34? 17/11 3/4 102/48 9/6 Câu hỏi 6: Fill in the blank: 37 minu...
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Choose the correct answer. Calculate: 3/4 x 5/4 = ? 8/4 15/16 15/4 8/16 Câu hỏi 2: Calculate: 1/2 - 2/5 + 5/3 = .... 49/30 52/30 53/30 51/30 Câu hỏi 3: Alice's mother is now four times as old as she. Four years ago, her mother was thirty years more than her. How old is Alice now? 12 6 10 8 Câu hỏi 4: Choose the correct answer. Which of the following fractions is greater than 1? 2/3 7/9 11/12 14/8 Câu hỏi 5: Which fraction is equal to 51/34? 17/11 3/4 102/48 9/6 Câu hỏi 6: Fill in the blank: 37 minutes 48 seconds + 29 minutes 36 seconds = .... minutes 24 seconds. 67 66 65 68 Câu hỏi 7: Charlie has eighteen pens more than Bill. Bill has one third as pen as Charlie. How many pens does Bill have? 9 pens 6 pens 3 pens 2 pens Câu hỏi 8: Fill in the blank: 1m2 = ....... cm2. Choose the correct answer. 10000 1000 100 100000 Câu hỏi 9: The sum of two numbers is the greatest - four digit number and their ratio is the smallest - two digit number. Find these numbers. 900 and 99 909 and 9090 989 and 10 999 and 989 Câu hỏi 10: Write 42/63 in lowest term. 4/6 4/9 2/3 6/9
Calculate: \(\frac{1}{2.3}+\frac{1}{3.4}+\frac{1}{4.5}+...+\frac{1}{38.39}+\frac{1}{39.40}\) = … (Write your answer by decimal in the simplest form).
Okay ?
Câu hỏi 1:Charlie has eighteen pens more than Bill. Bill has one third as pen as Charlie. How many pens does Bill have?9 pens 6 pens 3 pens 2 pensCâu hỏi 2:Fill in the blank: 1m2 ....... cm2. Choose the correct answer.10000 1000 100 100000Câu hỏi 3:Choose the correct answer. Calculate: 3/4 x 5/4 ?8/4 15/16 15/4 8/16Câu hỏi 4:Calculate: 1/2 - 2/5 + 5/3 ....49/30 52/30 53/30 51/30Câu hỏi 5:Which fraction is equal to 51/34?17/11 3/4 102/48 9/6Câu hỏi 6:Write 42/63 in...
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Câu hỏi 1:
Charlie has eighteen pens more than Bill. Bill has one third as pen as Charlie. How many pens does Bill have?
9 pens 6 pens 3 pens 2 pens
Câu hỏi 2:
Fill in the blank: 1m2 = ....... cm2. Choose the correct answer.
10000 1000 100 100000
Câu hỏi 3:
Choose the correct answer. Calculate: 3/4 x 5/4 = ?
8/4 15/16 15/4 8/16
Câu hỏi 4:
Calculate: 1/2 - 2/5 + 5/3 = ....
49/30 52/30 53/30 51/30
Câu hỏi 5:
Which fraction is equal to 51/34?
17/11 3/4 102/48 9/6
Câu hỏi 6:
Write 42/63 in lowest term.
4/6 4/9 2/3 6/9
Câu hỏi 7:
Choose the correct answer. Which of the following fractions is greater than 1?
2/3 7/9 11/12 14/8
Câu hỏi 8:
The sum of two numbers is the greatest - four digit number and their ratio is the smallest - two digit number. Find these numbers.
900 and 9990 9 and 9090 989 and 1099 9 and 989
Câu hỏi 9:
Alice's mother is now four times as old as she. Four years ago, her mother was thirty years more than her. How old is Alice now?
12 6 10 8
Câu hỏi 10:
Fill in the blank: 37 minutes 48 seconds + 29 minutes 36 seconds = .... minutes 24 seconds.
67 66 65 68
1/ Write the equivalent to fraction 3/5 with a denominator of 100.Result is 3/500 , 30/500 , 300/5 , 60/100 2/ If the sum of two numbers is the greatest-four digits number and the ratio of these numbers is the smallest -two digits number . 999 and 989 , 900 and 99 , 909 and 9090 , 989 and 10 3/ 7 hamburgers and 5 ice creams cost $32.10 hamburgers and 5 ice creams cost $35. The cost of one hamburger is $ .... 4/ John has sixteen balls . Jack has one quarter as ball as John . Jack has ....... ball...
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1/ Write the equivalent to fraction 3/5 with a denominator of 100.Result is 3/500 , 30/500 , 300/5 , 60/100
2/ If the sum of two numbers is the greatest-four digits number and the ratio of these numbers is the smallest -two digits number . 999 and 989 , 900 and 99 , 909 and 9090 , 989 and 10
3/ 7 hamburgers and 5 ice creams cost $32.10 hamburgers and 5 ice creams cost $35. The cost of one hamburger is $ ....
4/ John has sixteen balls . Jack has one quarter as ball as John . Jack has ....... balls
5/ Charlie has eighteen pens more than bill .
Bill has one third as pen as Charlie . Bill has : 6 pens , 9 pens , 2 pens , 3 pens
1/- Compare : A = (1+3+5+...+139)/70 and B = (2+4+6+...+138)/69
Answer : A......... B
2/- In the follwing figure , ABED and BCFE are square . If the perimeter of the rectangle ACFD is 54cm . Then its area is :
3/- Calculate : 4/16 + 6/15 + 8/14 + 3/7 + 3/5 + 3/4 = ?
( Write your answer in the simplest form . )
Question 1:Compare: Question 2:Compare: A and B Answer: A BFill in the blank with the suitable number Question 3:Calculate: The value of A is Question 4:Calculate: The value of A is Question 5:Find two consecutive even numbers if the first number is of the second number.Answer: The second number is Question 6:There are 49 students in a class. Boy students are the number of girl students. There are girl students in this class. Question 7:How many natural numbers not greater than 1665 w...
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Question 1:
Compare:
Question 2:
Compare: A = and B =
Answer: A B
Fill in the blank with the suitable number
Question 3:
Calculate:
The value of A is
Question 4:
Calculate:
The value of A is
Question 5:
Find two consecutive even numbers if the first number is of the second number.
Answer: The second number is
Question 6:
There are 49 students in a class. Boy students are the number of girl students. There are girl students in this class.
Question 7:
How many natural numbers not greater than 1665 which are divisible by 5?
Answer: numbers
Question 8:
Calculate:
The value of A is
Question 9:
How many 3 - digit numbers are divisible by 2, 3 and 5?
Answer: numbers.
Question 10:
If then is
ĐỀ THI VIOLYMPIC TOÁN VÒNG 10 - LỚP 1 (26-12-2013) 5-5+1 = 8-3-4 ; 8+1=9 ; 2+7-7 = 8-3-3 ; 5+4-1 = 6+3-1 ; 6+1 = 9-3+1 ; 6-1-2 = 8-3- 3 ; 1+2+3 = 5+4-3 ; 9+1 = 5+5 ; 6-2 = 1+3 ; 9-4 = 3+2 . 16-5-1 < 9-8 < 10-4-4 < 1+2 < 6+4-5 < 3+4-1 < 6+1 < 2+7-1 < 6+3 < 5+3+2. 4 = = 5 > 2
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