Maths practice for 12-year-olds - page 221 of 347
Number of problems found: 6923
- Gold horseshoe
Calculate the volume of a gold horseshoe that weighs 750 g. - Family Trip Child Discount
A trip for one person costs CZK 14,800. If the child has a quarter-price discount, how much will a family of three pay for it? - Write 2
Write 791 thousandths as a fraction in expanded form. - Motorcyclist
From Trutnov, the motorcyclist started at an average speed of 60 km/hour. At 12.30hrs, Peter began driving the passenger car at 80 km/hour. How many hours and at what distance will a car catch a motorcycle from Trutnov? - The Mayflower
The Mayflower sailed for 66 days on its voyage from England to America. If 1/2 of the days at sea were sunny with good weather, 1/6 of the days were sunny but very windy, and the rest were stormy, how many days of stormy weather did the pilgrims experienc - Drawing Scale Ratio Board
I have a board measuring 3.2 m x 1.23 m, and I need to draw it in A3 format. It is 42 cm x 29.7 cm. How do I find out the ratio for drawing the board? I will also ask for the procedure. - Z7–I–5 MO 2018
At the Rose garden centre, one shop ordered a total of 120 roses in red and yellow, the second shop a total of 105 roses in red and white, and the third shop a total of 45 roses in yellow and white. The garden centre fulfilled the order, in such a way tha - Game 27
Susan wanted to play the game. In the beginning, the first says a number from 1 to 8. Then the second player adds a number from 1 to 5 and tells the sum. Again, Susan adds a number from 1-5 and says sum, etc. The winner must say the number 27. What first - Point construction
Given an isosceles right triangle ABS with base AB. On a circle centered at point S and passing through points A and B, point C lies such that triangle ABC is isosceles. Determine how many points C satisfy the given conditions and construct all such point - Pump Fill Tank Time
The pump delivers 0.75 hl of water per minute. How long does it take to fill the tank with a volume of 10m³? Write the result in hours and minutes. - Adult
An adult person should drink on average 2.5 litres of liquids per day and sleep 7 hours. He works 8 hours daily. The diet should consist of three nutrients: proteins, carbohydrates, and fats. Per 1 kg of body weight of an adult, these are 2 g of proteins, - On the bed We want to plant several rows of cauliflower seedlings and several rows of lettuce seedlings alternately on the bed. The cauliflower seedlings are planted 45 cm apart, the lettuce seedlings 25 cm apart. Planting seedlings of both types of plants starts fr
- Paper box
Calculate whether 11 dm² of paper is sufficient for gluing a box without a lid with bottom dimensions of 2 dm 15 cm and 12 cm high. Write result as: 0 = No, 1 = Yes - Cube surface and volume
Find the surface of the cube with a volume of 27 dm³. - Pound2kilos
How many pounds equal 1 kilogram? - Soup from canteen
For how many people is 90 liters of soup enough if we assume 3/8 liters of soup per person in the canteen? - Inlet and outlet
The pool has a capacity of 50 hl. The inlet pipe flows in 1 minute 1.25 hl, and the waste pipe outlet drains the full pool in 50 minutes. How long will it take to empty the entire pool when both the inlet and outlet are opened simultaneously? - Trams Cycle Meeting Time
Three trams left the tram depot at once. The first has a 20-minute cycle, the second a 40-minute cycle, and the third a 65-minute cycle. After how many minutes will the same trams meet if they run continuously (drivers take turns)? - Cris had
Cris had 15000. He spent 1/3 of his money on a table and the remaining on five similar chairs that cost the same. How much did one chair cost? - Temperature measurement calculation
In the evening, Zuzana measured the air temperature at -2.4 °C. In the morning, she measured the temperature three times higher. What temperature did Zuzana measure in the morning?
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