Mr Bao has a rectangle yard behind his house. The area of this yard is 1000 square
meters. If the length of the yard was reduced by 10 metres, the area would only be 800 square
meters. Find the width of Mr Bao's yard.
Exam number 1: Đi tìm kho báu
Question 1: There are 40 students in Mrs. Brown's class. 25% of her students received a B on the test. How many students received a B?
a. 10 b. 12 c. 18 d. 20
Question 2: What is the product of 3.05 and 2.8?
a. 8.54 b. 8.056 c. 8.56 d. 8.054
Question 3: A clothing shop is having a 40% off sale. How much would Jane have to pay for a $30 sweater with a 40% discount?
a. $18 b. $20 c. $50 d. $13
Question 4: If a pen costs $1.75 and an eraser costs $0.85, which of the following is the cost of 10 erasers and 5 pens?
a. $21.75 b. $26 c. $18.75 d. $17.25
Question 5: If the area of the rectangle ABCD is 60cm2 then the area of the trapezoid MNCD is ..........cm2.
a. 48 b. 50 c. 45 d. 54
Exam number 2: Tìm cặp bằng nhau
Exam number 3: Fill in the blank with the suitable number
Question 1 The length of each edge of a cube is 3 cm. The surface area of the cube, in cm2, is .............
Question 2: At the beginning of the summer, Bob was 140 cm tall. At the end of the summer, he measured his height again and discovered that it had increased by 5%. Measured in cm, what was his height at the end of summer?
Question 3: The number of centimetres in 7.05 metres is ...............
Question 4: Bella scores on six of her eight pictures. The percentage of pictures that she does not score on is .........%.
Question 5: A bag contains green marbles and red marbles only. If the ratio of the number of green marbles to the number of red marbles is 1:4 then ............% of marbles are green.
Question 6: How many even numbers between 1 and 100 are divisible by 5?
Question 7: Alice is going to the store. One third of the way to the store, she stops to talk with Kelly. She then continues for 6 km and reaches the store. How many kilometres does she travel?
Question 8: How many three-digit numbers are exactly 19 more than a two-digit number?
Question 9: In the 3×3 table shown, the numbers 2, 4 and 6 are placed so that each number occurs only once in each row and only once in each column. The value of M + N is ............
Question 10: How many different 3-digit whole numbers can be formed using the digits 4, 5, 0 and 8, assuming that no digit can be repeated in a number?
the sum of two odd numbers is 112 . Find those numbers if there are 6 odd numbers between them.
The average of the two odd numbers is 850. Find those two numbers, knowing that there are 50 other odd numbers between them
(nhanh thì mình tick)
Integers from 1 to 20 inclusive are written on the board.Any 2 numbers on the board are erased and then the sum of the two erased number are written on the board.This process is repeated exactly 18 times.Now there are just 2 numbers left on the board,so that one is 6 times the other.Find the smallest number of the two.Dịch cho mik với nha!
What is the perimeter of an 8 " square?
Trả lời bằng tiếng anh giúp mình
the average of five consecutive even numbers is 40 the average of the smallest and largest of these numbers is
36; 42; 40; 38
An infinite sequence of numbers 1, 2, 3, 5, 8, 3, 1, 4, 5, 9, 4, … follows the
pattern such that starting from the third number, each number is equal to the units
digit of the sum of the two numbers in the sequence immediately preceding it.
What is the 2019th number of the sequence?
Task 10: Read and do the tasks followed.
1. Read and complete the text with available words.
different, department, quiet, stores, lots of, restaurant, children, shows, late, area
I live in the city. The place I live is (1) ___________, but it depends on the time of the day, and there is a small (2) ___________ in the area, and people tend to go there. So sometimes you hear when people are coming out when it’s really (3) ___________, but it’s not noisy all the time. It’s OK. There are (4) ____________ families, so there are lots of (5) _____________ there. It’s a very nice community. Other normal cities are like a mess, but my city is (6) ______________. It’s very clean, people there maintain it, and they keep it very nice. And there are lots of (7) ____________, such as bookstores, dress shops, (8) ____________ stores, and a small family theater where kids can go watch (9) ____________ with their family. It’s a very nice (10) _____________.
2. Read and decide if each statement is True or False.
1. ______ There is a large restaurant in the area.
2. ______ The area is always quiet.
3. ______ There are lots of kids because there are many families.
4. _____ This area is similar to normal cities.
5. _____ There are many stores in this area.