Maths practice for 12-year-olds - page 218 of 347

Number of problems found: 6930

Far country
In a country far away, the value of 3 pesos is 12 centavos, more than the value of 1 peso. How many centavos is 1 peso worth?
The florist
The florist had 200 roses in the morning. During the day, more than half sold it. The remaining roses will be tied to the bouquet. One always remains if a bouquet of 3, 4, 5, or 6 roses is bound. How many roses from the morning shipment were sold?
The lowest
The lowest temperature on Thursday was 20 °C. The lowest temperature on Saturday was 12 °C. What was the difference between the lowest temperatures?
Three-digit number puzzle
Dominika wrote a three-digit number ending with the number 6. When she crossed out the last digit and wrote it at the beginning of the number, she noticed that the new number was as much greater than 600 as the original number was less than 600. What numb
Flooring a room
Find the cost of flooring a room 6.5 m by 5 m with square tiles of sides 25 cm at the rate of rupees 9.40 per tile.
The average
The average of one set of 4 numbers is 35. The average of another set of numbers is 20. The average of the numbers in the two sets is 30. How many numbers are there in the other set?
Three Siblings Ball Cost
The three siblings bought a ball together. Lada continued to pay half of the money, Mira a quarter, and the rest, CZK 20, paid by Norbert. How many crowns did the ball cost?
Coal mine
The monthly plan of 17,000 tons of coal exceeded the mine by 1/25. How many tonnes of coal have been harvested from the mine above plan?
Watch time difference
The watch is 1/4 minute ahead of the clock. We adjusted it at 7 AM. How much do they show at 3 PM?
Year month fraction
What part of the year is 6 (1,3,10,4) months?
Car Speed and Distance
The car will cover a certain distance in 3 hours and 20 minutes. If he increases his speed by 10 km/h, he will cover this distance in 2.5 hours. Calculate this distance.
Fraction product puzzle
Find such a fraction to the fraction that their product is equal to 8/11, 4, 1/100, 13/4, 1/3
A tile
A tile setter is covering a 5 ft by 5 ft square shower wall. Each tile covers 4 5/8 in by 4 5/8 in a square. How many rows of tile are needed to reach 5 ft? How many tiles are needed to cover 5 ft by 5 ft square
Fraction comparison puzzle
How many times is a quarter of an eighth smaller than a third of a sixth?
Cube
The sum of all cube edges is 30 cm. Find the surface area of the cube.
Volume - pool
The pool, 10.5 m wide, 50 m long, and 3 m deep, will be filled in 3 days. On the first day, 2/5 of the water volume flowed into it, and 1/3 of the rest on the second day. How many liters of water flowed into the pool on the third day?
Temperature increase
Suppose the temperature at 9:am is 50 degrees. What is the temperature at 5:00 pm if the temperature increases by 4 degrees Fahrenheit each hour?
Christmas Gingerbread Distribution
The old mother baked 275 Christmas gingerbreads and kept three-fifths of them, dividing the rest among her children in a ratio of 3:4:2:1. How many gingerbreads did she give each?
Area of a circle
The circumference of the circle is 150.72 centimeters. Calculate the area of the circle.
Two Digit Numbers Digits
How many two-digit numbers can be written using the number 0,2,6? We can also repeat the digits in the number.

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