Maths practice for 12-year-olds - page 284 of 300
Examples and word math problems for 7th grade.Number of problems found: 6000
- Inequation
Solve the inequation: 5k - (7k - 1)≤ 2/5. (5-k)-2 - Rotatable tower
The rotatable tower situated in the city center has the ground shape of a regular polygon. If the tower is rotated by 18° around its centerpiece, it looks from the side same. Your task is to calculate at least how many vertices can have a ground plan view - Christmas
Exactly after 114 hours, we sit down at the Christmas Eve table. What day and what time was it when Dad said this sentence? They sit at the Christmas Eve table exactly at the 18-o'clock (6 PM). - Soup
47% of pupils at the school eat in the canteen, 1/47 of students who eat in the canteen eat lunch soup. a) What percentage of pupils who eat in the canteen and eat soup for lunch? b) What percentage of all pupils of school eat lunch soup?
- Sales off
Calculate the original price of the good if the price after discount 25% and the subsequent rise of 20% is 400 USD. - Rounding
The following numbers round to the thousandth: - Decomposition
Make decomposition using prime numbers of number 206. The result is written as prime factors (all, even multiple) - Cars
Cars started at 7:00 AM. From point A, the car runs at 40 km per hour, and from B, the car runs at 70 km per hour. Between A and B is a 250 km long road. When and where will they meet (measured from point A)? - Playing Cards
Kara has 2 times more cards than Dana. Dana has 4× less than Mary. Together, they have 728 cards. How many cards have each of them?
- Segments
We divide line segments 59 cm and 5.3 dm long into equal parts, the lengths of which are expressed as integers in centimeters. How many ways can we divide? - Ladder
8.3 meters long ladder is leaning against the wall of the well, and its lower end is 1.2 meters from this wall. How high from the bottom of a well is the top edge of the ladder? - Bouquet
The gardener tied a bouquet of flowers for eight, and none was left. Then he found that he could tie a bouquet of 6 flowers and also none was left. How many have gardener flowers (minimum and maximum) if they had between 50 and 100 flowers? - Dog II
The journey from a ranger's home to the town is 6 km. Mr. Ranger started from his home and went 3 km per hour. His women came from the town and also went 3 km per hour. The ranger starts the dog and runs in 12 km in 1 hour. The dog goes to the ranger's wo - Group
A group of kids wanted to ride when the children were divided into groups of 3 children, one remained. When divided into groups of 4 children, one remains. When divided into groups of 6 children, one remains. After being divided into groups of 5 children,
- Total displacement
Calculate the total displacement of the 12-cylinder engine with the diameter of the piston bore B = 8.9 cm and stroke S=1.9 cm of the piston. Help: The crankshaft makes one revolution while the piston moves from the top of the cylinder to the bottom and b - Midpoint of segment
Point A has coordinates [4; -11], and the midpoint of segment AB is the point [17; -7]. What are the coordinates of point B? - Tetrapack
How high should the milk box be in the shape of a prism with base dimensions 8 cm and 7.2 cm if its volume is 1 liter? - Barrel 2
The empty barrel weighs 7 kg. When it is filled with water up to 45% height, it weighs 60 kg. How heavy is a barrel full of water? - Goods
To the market is introducing a new product, the first week is sold at a reduced price. 8 products are sold at an entry price same as 5 products at the normal price. How many percent is the reduced price less than the current price for this product?
Pizza with a diameter of 40 cm weights 409 g. What diameter will a pizza weigh 764 g made from the same cloth (same thickness) and decorated?Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
