Ôn tập toán 6
Các câu hỏi tương tự
Exer 1: Given two natural numbers whose sum are 78293. The bigger number where 5 is the units digit and 2 is hundred digit. If we clean these digits then we obtain a number which equals the smaller number. Find two natural numbers.
Exer 2: Prove that: If x, y in N and x + 2y divisible by 5 then 3x - 4y divisibles by 5.
Exer 3: Given that 2x + 5y ⋮ 7. Prove that 4x + 3y ⋮ 7.
Đọc tiếp
Exer 1: Given two natural numbers whose sum are 78293. The bigger number where 5 is the units digit and 2 is hundred digit. If we clean these digits then we obtain a number which equals the smaller number. Find two natural numbers.
Exer 2: Prove that: If x, y \(\in\) N and x + 2y divisible by 5 then 3x - 4y divisibles by 5.
Exer 3: Given that 2x + 5y \(⋮\) 7. Prove that 4x + 3y \(⋮\) 7.
Exer 1: There is a division with the quotient is 6 and the remainder is 3. The sum of dividend, divisor and remainder are 195. Find the dividend are divisor.
Exer 2: Prove that: Amoney three consecutive natural numbers, there is one only one the number which divisibles by 3.
Exer 3: Given natural number, n overline{1ab1}. Let m be the natural number which is written the opposite respectively of n. Prove that the different of n and m divisibles by 90.
Đọc tiếp
Exer 1: There is a division with the quotient is 6 and the remainder is 3. The sum of dividend, divisor and remainder are 195. Find the dividend are divisor.
Exer 2: Prove that: Amoney three consecutive natural numbers, there is one only one the number which divisibles by 3.
Exer 3: Given natural number, n = \(\overline{1ab1}\). Let m be the natural number which is written the opposite respectively of n. Prove that the different of n and m divisibles by 90.
Exer 1: Find digit a such that n overline{aaaaa24} divisibles by 8 and 9.
Exer 2: Prove that number:
A (n+2014)(n+2015)(n+2016) is a multiple of 6; where every n in N.
Exer 3: Given n 101998 - 4.
a, Does n divisibles by 3?
b, Does n divisibles by 9?
And why?
Đọc tiếp
Exer 1: Find digit a such that n = \(\overline{aaaaa24}\) divisibles by 8 and 9.
Exer 2: Prove that number:
A = (n+2014)(n+2015)(n+2016) is a multiple of 6; where every n \(\in\) N.
Exer 3: Given n = 101998 - 4.
a, Does n divisibles by 3?
b, Does n divisibles by 9?
And why?
A prime number between 42 and 46 is
In the following figure, AN = 5cm and AB = 8cm. NB =............. cm
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K is a prime number and a multiple of 43. What is K?
Chia động từ1. When I got home I found that water ..... down the kitchen walls.(Run)2. After he ...... his English course, he went to England to continue his study. (finish)3. How .......since we ....... collegeA. are you - leftB.were you - leftC. have you been - have leftD. have you been - left4. I .... much of you lately. We ....... three months ago.A. havent seen-last meet B. didnt see-met C. havent seen - have meet D. didnt see - have met5. The Chinese ...... spaghetti dishes for a long tim...
Đọc tiếp
Chia động từ
1. When I got home I found that water ..... down the kitchen walls.(Run)
2. After he ...... his English course, he went to England to continue his study. (finish)
3. How .......since we ....... college
A. are you - left
B.were you - left
C. have you been - have left
D. have you been - left
4. I .... much of you lately. We ....... three months ago.
A. haven't seen-last meet B. didn't see-met C. haven't seen - have meet D. didn't see - have met
5. The Chinese ...... spaghetti dishes for a long time before Marco Polo ..... back to Italy
A. Made-brought B. Have made-brought C. made - havd brought D. had been making-brought
6. When I arrived at the meeting the first speaker ..... speaking and the audience ........
A. just finished-were clapping
B. had just finished-had clapped
C. had just finished-were clapping
D. just finished-had clapped
7. He ..... his job last month and then he.........out of work
A. lost-was B. was lost-had been
C. has lost-was D. lost-have been
8. In the last hundred years, travelling ...... much easier and more comfortable ( become )
9. In the 19th century, iit ...... two or three months to across North America by covered wagon.
( take)
10. In the past, the trip ...... very rough and often dangerous , but things ..... A great deal in the last hundred and fifty years.
A. was-have changed
B. is-change
C. had been-will change
D. has been -changed
Jane lists all common factors of 90 and 36 . The result is { 1;2;3;6;9 }
The missing number is
1. The 112 4-grade students at Edgemont School donate pennies to raise 75 dollar for a local charity. What is the minimum number of pennies each student needs to bring if they are to meet their goal of collecting 75 dollar?(1 dollar 100 pennies)2. It takes Abby twice as long as Blair and half as long as Caitlin to ride her bike to school. If it takes Blair 10 minutes to ride her bike to school, how long does it take Caitlin to go to school?
Đọc tiếp
1. The 112 4-grade students at Edgemont School donate pennies to raise 75 dollar for a local charity. What is the minimum number of pennies each student needs to bring if they are to meet their goal of collecting 75 dollar?
(1 dollar = 100 pennies)
2. It takes Abby twice as long as Blair and half as long as Caitlin to ride her bike to school. If it takes Blair 10 minutes to ride her bike to school, how long does it take Caitlin to go to school?
If m divisible n , p divisible m and n divisible q then the least common multiple of m,n ,p and q is
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