Tư duy-tk-01

MATHS 5
Question 1: TYPICAL PROBLEMS
Hung and Dung have 75 marbles. The numbers of Hung’s marbles is 3/2 the number of Dung’s marbles. How many marbles does each pupil have?
Hung has 30
Dung has 30
Hung has 45
Dung has 45
Question 2: TYPICAL PROBLEMS
Two warehouses contain 350 tons of salt. The amount of salt in the bigger warehouse is 4/3 of the amount of salt in the smaller warehouse. How many tons of salt does each warehouse contain?
bigger warehouse: 250
smaller warehouse: 100
bigger warehouse: 200
smaller warehouse: 150
Question 3: TYPICAL PROBLEMS
Mrs. Li sold 210m of white fabric and blue fabric. The length of white fabric is 5/2 the length of blue fabric. Find the length of white fabric and blue fabric.
white fabric: 150
white fabric: 60
blue fabric: 60
blue fabric: 150
Question 4: TYPICAL PROBLEMS
Classes 5A and 5B planted 330 trees. 5A has 35 pupils, 5B has 31 pupils. How many trees did each class planted? (Each pupil planted the same number of trees)
Classes 5A: 230
Classes 5A: 175
Classes 5B: 100
Classes 5B: 155
Question 5: TYPICAL PROBLEMS
In a store, the amount of rice is 360 more than the amount of corn. Also, the amount of rice is 7/3 the amount of corn. How much rice and corn there?
the amount of corn 400
the amount of rice is 630
the amount of rice is 500
the amount of corn 270
Question 6: TYPICAL PROBLEMS
The number of red lights used is 240 less than the number of yellow lights used. Also, the number of red lights is 3/8 the number of yellow lights. How many red and yellow lights are there?
The number of red lights is 144
The number of red lights is 134
The number of yellow lights is 384
The number of yellow lights is 394
Question 7: TYPICAL PROBLEMS
Tuan is 3 years older than his sister. The Tuan’s age is 6/5 his sister’s age. Find their ages.
Sister 15
Tuấn 18
Sister 12
Tuấn 21
Question 8: TYPICAL PROBLEMS
28 pupils of class 5A and 31 pupils of class 5B planted trees. 5A planted 12 trees less than 5B. How many trees did each class planted?
class 5B planted 126
class 5B planted 124
class 5A planted 112
class 5A planted 110
Question 9: TYPICAL PROBLEMS
6m of silk cost 240000 dong. How much does 9m of the same silk cost?

1m of silk costs 40000
9m of silk cost 360000
1m of silk costs 20000
9m of silk cost 380000
Question 10: TYPICAL PROBLEMS
A train travels 78 km in 3 hours. How many kilometres can the train travel in 6 hours?
in 6 hours, the train can travel 156 (km)
in 6 hours, the train can travel 200 (km)
Question 11: TYPICAL PROBLEMS
12 workers complete a task in 8 days. How many workers can complete that task in 6 days?
14 workers
16 workers
18 workers
20 workers
Question 12: TYPICAL PROBLEMS
In a kindgarden, milk enough for 60 babies in to consume in 15 days. In fact, There are 75 babies consuming milk. How many days does it take to use up storage of milk?
12 days
10 days
14 days
13 days
Question 13: TYPICAL PROBLEMS
My teacher bought 68 pencils at 6000 each. If he had used the same amount of money to buy pencils at 3000 each, how many pencils could he bought?
80 pencils
90 pencils
96 pencils
86 pencils
Question 14: TYPICAL PROBLEMS
A van can only carry 250 packages of corn, each packages contains 40 kg. If the van is loaded with 50 kg-packages, how many packages can the van can carry at most?
230 50 kg-packages
220 50 kg-packages
210 50 kg-packages
200 50 kg-packages