Maths practice for 12-year-olds - page 242 of 355
Number of problems found: 7082
- Machine Parts Production
The machine produces 2520 parts in 1 hour. How many will they make in 33 minutes? - The alley
The alley was planted with 490 trees 6 meters away. How many trees would be planted if the distance was 7.5 m? - Thunderstorm
The sound travels 1 km in about 3 seconds. How far is the storm if there is a time interval of 8 seconds between lightning and thunder? - Heart blood pumping
In 1 minute, the human heart pumps an average of 5 liters of blood. How many hectoliters will be pumped a) in 1 day and b) in 1 year? - Seven
Seven friends agreed to send everyone a holiday card. How many postcards were sent? - Report 2
A School reports students to teacher ratio of 6:1. If there are 45 teachers in the school, how many students are there? - Cube Volume from Shell
The area (surface of the shell) of the cube is 93 cm². What is the volume of the cube? - Simple sequence
Continue with this series of numbers: 1792,448, 112, _, _ - Dinosaurs
More than 30 and less than 60 dinosaurs have met at the pond. A quarter of them bathed, and 1/7 saws and the rest gripped. How many were at the pond? How many were there? - Two discounts
The MP4 player cost 960 CZK, and the price was twice gradually reduced in the ratio of 4:3:3/2. How much did the player cost after the second discount? - Time Puzzle Midnight
A pedestrian met Street Math and asked him what time it was. "Add half the time to midnight to a quarter of the time, and you'll get the exact time." What time was it? - Cyclist and Motorcyclist Time
The cyclist covered a certain distance in 6 hours and 15 minutes. How long will it take for a motorcyclist to travel five times more if he travels three times faster? - Quadrilateral surface area
Calculate in dm² the surface of a quad whose edges have 1.2 dm, 1.4 dm, and 2dm. - Twenty
Twenty rabbits are put in 4 cells so that there are a different number of rabbits in each cell containing at least three rabbits. What is the largest possible number of rabbits in one cell? - Dropped sheets
Three consecutive sheets dropped from the book. The sum of the numbers on the pages of the dropped sheets is 273. What number has the last page of the dropped sheets? - Pyramid Height Volume Area
What is the tent's height in the shape of a regular quadrilateral pyramid, whose volume is three dm³ and the base has an area of 6 dm²? - Average Speed for Distance
At what average speed does a car have to travel to drive 55 km in exactly half an hour? - Drawing Gym to Scale
The gym at the school is 12 m wide and 1800 cm long. Draw it on a scale of 1:500 - Strawberry Jam Sugar
Friends Marika and Katka decided to prepare strawberry jam together according to the recipe. They needed 50g of sugar for 0.5kg of fruit. How many kilograms of sugar must the friends prepare if they make jam from 2.3 kg of strawberries? - Calculate
Calculate the area cm² diamond with a side length of 9.8 cm and a height on the side of 5 cm.
Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
