Maths practice for 12-year-olds - page 46 of 350
Number of problems found: 6994
- From tank 2
First 1/3 was drained from the water tank, then 1/4. There were 20 liters of water left in the tank. How many liters of water were in the tank at the beginning? - Peter 27
Peter earned twice as much as Jano on his part-time job. Jano earned 50 euros less than Peter. How much did each of them earn? - Irregular
Calculate the area and perimeter of the garden that was created from a rectangular plot measuring 10 by 20 meters after transferring one corner measuring 6 by 7 meters. The separated rectangular plot has parallel sides to the main plot. Did the perimeter - Thinking unknown n
I am thinking of a number. If I subtract 14 from it and multiply by 6, I get the number 210. What is the number I am thinking of? - Traveled 84103
We have traveled 2/5 of the way, which is 6/35 km. How long is the journey? - Students 84088
The ratio of boys to girls in a class is 3:5. How many students are there in a class if there are 15 girls? - Six horses
How many bags of feed are needed for 6 days for six horses, if 21 bags of feed are needed for 3 days for seven horses? - Brick 5
A brick weighs 7/2 kg, a tile 11/8 kg. The first truck was carrying 900 bricks, the second truck was carrying 2000 tiles. Which car was carrying a heavier load and by how many kg. - Divisible PIN
Marek's mother helped him with his shopping. She wanted to pay with a card when collecting the goods in person, but she wasn't sure what her PIN was. Could it have been if her PIN code was a number divisible by six? - Grass seed
How many kilograms of grass seed are needed to establish a lawn on a rhombus-shaped plot of land with sides 55m and 40m, if the height of the shorter side is 22m and 1kg of seed is enough for 40m square? - Triangles - combinations
How many different triangles with sides in whole centimeters have a perimeter of 12 cm? - Percent 84011
What percent is 70 of 35? - Family - land
The Vesely family bought a plot of land measuring 30 1/2 m and 26 2/3 m. Before they start building, they want to fence it. How many meters of mesh do they need to buy if they leave 2 7/8 m for the gate? - Probability - target
A target is divided into two zones. The probability that the shooter will hit zone 1 of the target is 21%; that he will hit zone 2 of the target is 48%. What is the probability that the shooter will hit the target? - Mirka 2
Mirka is saving for a bicycle. She already has 336 euros. That is 1/5 more than half the price of a bike. How many euros does a bicycle cost? - Suitcase - rod
The trunk of a car has the shape of a cuboid with sides 1.6m x 1.2m x 0.5m (width, depth, height). Determine the longest thin rod that can be placed on the bottom. - Strawberry - mililiters
The volume of a strawberry cocktail is 1250 ml. How many liters is it and convert it to fractions? - Sixths 83987
How much is three and five-sixths less than four and five-ninths? - That: 83969
Find x such that: a) 2 : 5 = 8 : x b) x : 28 = 4 : 7 - Distance - cities Determine the actual distance between two cities if their distance on the map is 7.5 cm and the map scale is 1:60,000.
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