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10 tháng 11 2016

284 skers

10 tháng 11 2016

Anna hơn Mary số vé là:

206-78=128(vé)

Vậy Anna phải cho Mary số vé để hai người bằng nhau là:

128:2=64 (vé)

So 64 kets

19 tháng 12 2016

sau khi chia đều số miếng dán ra cả 2 bạn có số miếng dán là : (206+78):2=142 ( miếng dán)
vậy anna càn đưa số miếng dán để 2 bạn bằng nhau là : 142-78=64 ( miếng) 
Nhớ đánh sao nha

19 tháng 12 2016

Đáp án là 64

7 tháng 3 2017

8: số chai màu xanh là: 289 + 259 = 548 (chai)

số chai màu tím là 1230 - 289 - 548 = 393 (chai)

15 tháng 2 2017

41 books

27 tháng 2 2017

Peter ate some candy seven tablets

27 tháng 2 2017

Gọi:
Số kẹo Anna đã ăn là a
Số kẹo Mary đã ăn là b
Số kẹo Peter đã ăn là c
Theo bài ra ta có:
a + b + c = 22 (1)
a = 2 x b (2)
b < c < a (3)
Thay (2) vào (1) ta được: 
2 x b + b + c = 22
3 x b = 22 - c
3 x b = 21 + (1 - c) (4)
Vì 21 chia hết cho 3. Suy ra: (1 - c) chia hết cho 3
Vì (1 - c) chia hết cho 3, suy ra: c có thể nhận các giá trị là: 1, 4, 7, 10
Nếu c = 1 thì 3 x b = 21 + (1 - c) = 21. Suy ra: b = 7 (loại vì b > c)
Nếu c = 4 thì 3 x b = 21 + (1 - c) = 18. Suy ra: b = 6 (loại vì b > c)
Nếu c = 7 thì 3 x b = 21 + (1 - c) = 15. Suy ra: b = 5 (nhận)
Nếu c = 10 thì 3 x b = 21 + (1 - c) = 12. Suy ra: b = 4 và a = 2 x b = 2 x 4 = 8 (loại vì a < c)
Vậy: Số kẹo Peter đã ăn là 7 viên

Question 1:What number should be placed in the box to make ?Answer: Question 2:What is the remainder when 65870 is divided by 8?Answer: Question 3:The expression  is equal to Question 4:Mya has 10000 dollars in bills of 40 dollars.How many 40 dollars- bills does she have? Answer: 40 dollars- bills.Question 5:The numbers from 1 to 1000 are written. How many of these numbers have at least two digits 5?Answer:  numbers.Question 6:Five years ago, Sarah was 7 years old. Two years later, she...
Đọc tiếp

Question 1:
What number should be placed in the box to make ?

Answer: 

Question 2:
What is the remainder when 65870 is divided by 8?
Answer: 

Question 3:
The expression  is equal to 

Question 4:
Mya has 10000 dollars in bills of 40 dollars.How many 40 dollars- bills does she have? 
Answer: 40 dollars- bills.

Question 5:
The numbers from 1 to 1000 are written. How many of these numbers have at least two digits 5?
Answer:  numbers.

Question 6:
Five years ago, Sarah was 7 years old. Two years later, she will be  years old.

Question 7:
Six students had an orange eating contest. The graph shows the number of oranges eaten by each student. Mary ate the fewest oranges and Jack ate the fewest. How many more oranges did Jack eat than Mary? 

Answer:  oranges.

Question 8:
A large box of candies and a small box of candies together cost 13 dollars. If the large box costs 5 dollars more than the small box, what is the price of the small box of candies? 
Answer:  dollars.

Question 9:
Five students do an exam with a maximum score of 50. The scores of four of the students are 41, 44, 46 and 49. The average of five students’ scores is the same as the score of the fifth student. The score of the fifth student is 

Question 10:
A fraction is equal to . The sum of its denominator and its numerator is 91. What is the difference between the denominator and numerator of this fraction? 
Answer: 

1
21 tháng 3 2016

anh siêu nhân đây ko có thì giờ để giải bài này

Write the words in number form which consist of: 7 hundred thousands, 6 thousands, 3 hundreds, 4 tens and 2 units.Answer: Câu 2:Fill in the sequence with the missing number in order to have 3 consecutive natural numbers.897;  ; 899Câu 3:Fill in the sequence with the missing number in order to have 3 consecutive natural numbers.; 87; 88Câu 4:How many single digit numbers are there?Answer:  numbers.Câu 5:6 is just after of 5 and 5 is just before of 6. What is the product of just after and...
Đọc tiếp

Write the words in number form which consist of: 7 hundred thousands, 6 thousands, 3 hundreds, 4 tens and 2 units.
Answer: 

Câu 2:
Fill in the sequence with the missing number in order to have 3 consecutive natural numbers.
897;  ; 899

Câu 3:
Fill in the sequence with the missing number in order to have 3 consecutive natural numbers.
; 87; 88

Câu 4:
How many single digit numbers are there?
Answer:  numbers.

Câu 5:
6 is just after of 5 and 5 is just before of 6. What is the product of just after and just before of 10?
Answer: 

Câu 6:
Jean has 3014 beads. She has 497 beads less than Gillian. How many beads do they have altogether?
Answer: They have  beads altogether.

Câu 7:
There are 56 apples in a basket.  of them are green and the rest are red. How many red apples are there?
Answer: There are  red apples.

Câu 8:
The perimeter of a square garden is 36m. What is its area?
Answer: Its area is  .

Câu 9:
248 boys and 418 girls were divided into groups of 9. How many groups were there altogether?
Answer:  groups.

Câu 10:
Mr Junior bought 1 magazine, 1 book and 1 pen. The pen costs 5 dollar, the book costs 31 dollar more than the pen. The magazine costs twice as much as the book. How much did he spend on the three things?
Answer: He spent  dollar.

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