275:
Solve the problem by writing an equation.
There are 12 pots of chrysanthemum which are 3 pots more than that of orchid. How many pots of orchid are there?
Let be the number of pots of orchid.
Checking:
There are pots of orchid and pots of chrysanthemum.
=
There are pots of chrysanthemum more than that of orchid.
276:
Solve the problem by writing an equation.
There are 21 pots of chrysanthemum and orchidaltogether. Among them, 9 pots are orchid. How manypots of chrysanthemum are there?
Let be the number of pots of chrysanthemum.
Checking:
There are pots of orchid and pots of chrysanthemum.
=
There are pots of chrysanthemum and orchidaltogether.
277:
Solve the problem by writing an equation.
There were 10 cartons of apples in a grocery at first. Later, some other cartons were delivered to the grocery. There are 18 cartonsaltogether. How many cartons of apples were delivered?
Let be the number of cartons of apples were delivered.
Checking:
There were cartons of apples at first.
cartons were deliveredto the grocery.
=
There are cartonsaltogether.
278:
Solve the problem by writing an equation.
There are 22 minibuses in a car park. There are 10 fewer private cars than minibuses. How many private cars are there?
Let be the number of private cars.
Checking:
There are minibuses and private cars in a car park.
=
There are fewer private cars than minibuses.
279:
Solve the problem by writing an equation.
Mr. Lee and Mr. Wong ran round a football field. Mr. Lee ran 5 rounds. He ran 2 more rounds than Mr. Wong. How many rounds did Mr. Wong run?
Let be the number of rounds Mr. Wong ran.
Checking:
Mr. Lee ran rounds.
Mr. Wong ran rounds.
=
Mr. Lee ran more rounds than Mr. Wong.
280:
Solve the problem by writing an equation.
There are 32 boy scouts. They are 14 more boy scouts than girl guides. How many girl guides are there?
Let be thenumber of girl guides.
Checking:
There are boy scouts and girl guides.
=
There are more boy scouts than girl guides.
282:
Solve the problem by writing an equation.
Maggie bought some stationery with 25 dollars. She has 18 dollars left. How much did she have at first?
Let dollars be the money Maggie had at first.
Checking:
Maggie had dollars at first.
She spent dollars.
=
She has dollars left.
283:
Solve the problem by writing an equation.
After 15 L of orange juice was sold, 28 L orange juice is left. How much orange juice was there at first?
Let litres be the amount of orange juice at first.
Checking:
There was L of orange juice at first.
Lof orange juice was sold.
=
L of orange juice is left.
284:
Solve the problem by writing an equation.
Mable is 156 cm tall. She is 4 cm shorter than Kelly. How tall is Kelly?
Let cm be the height of Kelly.
Checking:
Mable is cm tall.
Kelly is cm tall.
=
Mable is cm shorter than Kelly.
285:
Solve the problem by writing an equation.
18 programmes have been performed in the show. There are still 5 more programmes ready for performance. How many programmes are there altogether?
Let be the number of programmes in the show.
Checking:
There are programmes altogether.
programmes have been performed.
=
There are still more programmes ready for performance.
286:
Solve the problem by writing an equation.
Pupils have made 80 red flags which are 10 flags fewer than green flags. How many green flags have they made?
Let be the number of green flags.
Checking:
Pupils have made green flags and red flags.
=
The number of red flags is fewer than that of green flags.
287:
Solve the problem by writing an equation.
A kindergarten teacher shares some grapes among 12 children. Each child can get 7 grapes. How many grapes are there?
Let be the number of grapes.
Checking:
There are grapes and they are shared among children.
=
Each gets grapes on average.
288:
Solve the problem by writing an equation.
Mother bought a dozen of cakes with 48 dollars. How much does each cake cost?
Let dollars be the cost of each cake.
Checking:
Each cake costs dollars.
Mother bought cakes.
=
She paid dollars.
289:
Solve the problem by writing an equation.
An organisation freed 128 owls this year. The number is 2 times that of last year. How many owls were freed last year?
Let be the number of owls freed last year.
Checking:
owls were freed last year.
owls were freed this year.
=
The number of owls freed is times that of last year.
290:
Solve the problem by writing an equation.
There are 18 bauhinia trees on each side of a path in a park. How many bauhinia trees are there altogether?
Let be the number of bauhinia trees altogether.
Checking:
There are bauhinia trees on both sides of the path.
=
There are bauhinia trees on each sideof the path.
291:
Solve the problem by writing an equation.
A bus travels 42 km per hour. It has travelled 126 km. How many hours has it travelled?
Let hours be the time the bus has travelled.
Checking:
A bus travels km per hour.
It has travelled for hours.
=
It has travelled km.
292:
Solve the problem by writing an equation.
There are 104 red balloons. The number of red balloons is 2 times that of yellow balloons.How many yellow balloons are there?
Let be the number of yellow balloons.
Checking:
There are yellow balloons.
The number of red balloons is 2 times that of yellow balloons.
=
There are red balloons.
293:
Solve the problem by writing an equation.
Kenneth’s family joined a one-day local trip. Each one has to pay 120 dollars. The whole family paid 480 dollarsaltogether. How many members are there in Kenneth’s family?
Let be the number of members in Kenneth’s family.
Checking:
Each member has to pay dollars.
There are members in Kenneth’s family.
=
They have to pay dollarsaltogether.
294:
Solve the problem by writing an equation.
There are some cartons of oranges. Each time 40 cartons are transported to a store room by a lorry. It takes 11 times to transport all of them. How many cartons of oranges are there?
Let be the number of cartons of oranges.
Checking:
There are cartons of oranges.
Each time cartons are transported.
=
It takes timesto transport all of them.
313
Solve the problem by writing an equation.
There are 13 boxes of apple tea at home which are 5 boxes more than lemon tea. How many boxes of lemon tea are there at home?
Let be the number of boxes of lemon tea.
Checking:
There are boxes of lemon tea and boxes of apple tea at home.
=
There are more boxes of apple tea than lemon tea.
314
Solve the problem by writing an equation.
Ling has 230 dollars. She has 35 dollars more than Cindy. How much does Cindy have?
Let dollars be the money Cindy has.
Checking:
Cindy has dollars.
Ling has dollars.
=
Ling has dollars more than Cindy.
316
Solve the problem by writing an equation.
There is a bag of green beans. After adding 33 green beans, there are 90 green beans inside the bagnow. How many green beans were in the bag at first?
Let be the number of green beans in the bag at first.
Checking:
There were green beans in the bag at first.
green beans is added.
=
There are green beans inside the bagnow.
317
Solve the problem by writing an equation.
There is a box of chocolates. Adding eating 16 pieces, 26 pieces are left. How many pieces were there in the box at first?
Let be the number of chocolates in the box at first.
Checking:
There were chocolates in the box at first.
chocolates are eaten.
=
There are chocolates left.
318
Solve the problem by writing an equation.
In a pet shop, there are 25 puppies. The number of puppy is 3 fewer than that of kittens. How many kittens are there in the pet shop?
Let be the number of kittens in the pet shop.
Checking:
There are kittens and puppiesin the pet shop.
=
There are fewer puppies than kittens.
319
Solve the problem by writing an equation.
There are 237 red flowers in a garden. The number of red flowers is 45 fewer than that of yellow flowers. How many yellow flowers are there in the garden?
Let be the numberof yellow flowers.
Checking:
There are yellow flowers and red flowers.
=
There are fewer red flowers than yellow flowers.
320
Solve the problem by writing an equation.
After selling 12 ball pens, there are still 358 ball pens left in a stationery shop. How many ball pens were there in the shop at first?
Let be the number of ball pens in the shop at first.
Checking:
There were ball pens at first.
ball pens was sold.
=
There are ball pens left.
321
Solve the problem by writing an equation.
The area of a rectangle is 68 cm2 and its width is 4 cm. What is its length?
Let cm be the length of the rectangle.
Checking:
Therectangle is cm long and cm wide.
=
Its area is cm2.
322
Solve the problem by writing an equation.
The total cost of 3 boxes of Chinese checkers is 72 dollars. What is the cost of each box?
Let dollars be the cost of each box of Chinese checkers.
Checking:
Each box of Chinese checkers costs dollars.
=
The total cost of 3 boxes is dollars.
323
Solve the problem by writing an equation.
There are 250 clips in 5 boxes. How many clips does each box contain?
Let be the number of clips in each box.
Checking:
Each box contains clips.
=
5 boxes contain clips.
324
Solve the problem by writing an equation.
A box of lemon tea costs 4 dollars. Mother paid 36 dollars. How manyboxes of lemon tea did she buy?
Let be the number of boxes of lemon tea mother bought.
Checking:
Each box of lemon tea costs dollars.
Mother bought boxesof lemon tea.
=
She paid dollars.
325
Solve the problem by writing an equation.
There are 78 dolls, which is 6 times that of robots. How many robots are there?
Let be the number of robots.
Checking:
There are dolls and robots.
=
The number of dolls is times that of robots.
326
Solve the problem by writing an equation.
A teacher divides a pack of craft paper among 36 pupils equally. Each pupil can get 8 pieces. How many pieces of craft paper are there in the pack?
Let be the number of pieces of craft paper in the pack.
Checking:
There are pieces of craft paper.
They are equally divided among pupils.
=
Each pupil can get pieces.
327
Solve the problem by writing an equation.
A bag of tea is packed into packets of 200 g each. There are exactly 7 packets. How many grams of tea were there in the bag at first?
Let grams be the weight of tea in the bag at first.
Checking:
There were g of tea in the bag at first
They are packed into packets of g each.
=
There are just packets.
399:
Write the algebraic expression in the blank.
There are R red beans in a bag. They are divided into 6 equal portions. Each portion contains red beans.
400
Solve the problem by writing an equation.
How much does each apple cost?
Let A dollars be the cost of each apple.
A=
Each apple costs dollars.
Checking:
Each apple costs dollars.
=
A dozen of apples cost dollars.
402:
Solve the problem by writing an equation.
Lily is 16 cm shorter than Peter. Lily is 139 cm tall, how tall is Peter?
Let cm be the height of Peter.
Peter is cm tall.
Checking:
Peter is cm tall.
Lily is cm shorter than him.
=
Lily is cm tall.
403:
Solve the problem by writing an equation.
The base of a parallelogram is 8 cm long and its area is 32 cm2. What is the height of the parallelogram?
Let cm be the height of the parallelogram.
The height of theparallelogram is cm.
Checking:
The base length of a parallelogram is cm and
its height is cm.
=
Its area is cm2.
404:
Solve the problem by writing an equation.
A box of juicy candies is divided equally among 18 people. Each person can get 6 candies. How many candies are there in the box?
Let be the number of candies in the box.
There are candies in the box.
Checking:
There are candies in the box.
There areequally divided among people.
=
Each person can get candies.
644:
Solve the problem by writing an equation.
An apple weighs 235 grams and a pear weighs P grams. If the apple weighs 50 grams more than the pear, how many grams does the pear weigh?
The pear weighs grams.
Checking:
The pear weighs grams.
The apple weighs grams more than the pear.
=
The apple weighs grams.
645:
Solve the problem by writing an equation.
An orange weighs 250grams and a mango weighs M grams. The weight of the orange is 305gramsless than the mango. How many grams does the mango weigh?
The mango weighs grams.
Checking:
The mango weighs grams.
Theorange weighs grams less than the mango.
=
Theorange weighs grams.
646:
Solve the problem by writing an equation.
Some bananas weigh 1260grams. A peachweighs H grams. The weight of bananas is 6 times that of the peach. How many grams does the peach weigh?
=
=
H=
The peachweighs grams.
Checking:
The peachweighs grams.
The weight of bananas is times that of the peach.
=
The bananasweigh grams.
647:
Solve the problem by writing an equation.
An apple weighs 235grams. An orange weighs 250grams. A watermelon weighsW grams. The total weight of the watermelon and apple is 9 times that of the orange. How many grams does the watermelon weigh?
=
=
=
W=
The watermelon weighs grams.
Checking:
The watermelon weighs grams.
The total weight of the watermelon and apple is times that of the orange.
=
The orangeweighs grams.
649:
Solve the problem by writing an equation.
Billy weighs3 kg more than Lily. Lily weighs2 kg more than Mary. Mary weighs35 kg. How manykilograms does Billy weigh?
Let kilograms be the weight of Billy.
Billy weighs kg.
Checking:
Billy weighs kg.
Billy weighs kg more than Lily.
=
Lily weighs kg.
Lily weighs kg more than Mary.
=
Mary weighs kg.
650:
Solve the problem by writing an equation.
There are 5 packets of crackers in a box. Each packet contains 6 pieces. If each piece weighs18 g, how many grams does a box of crackers weigh?
Let grams be the weight of a box of crackers.
A box of crackers weighs grams.
Checking:
A box of crackers weighs grams.
There are packets of crackers in a box.
=
Each packet weighs grams.
Each packet contains pieces.
=
Each piece weighs grams.