Maths practice for 12-year-olds - page 199 of 351

Number of problems found: 7018

Map scale distance
The particular map has a scale of 1:75000 a) The distance between the two places on the map is 42 mm. What is the actual distance? b) How long would the distance show, 15.75 km on the map?
Trees 6
On an island there grow side by side seven trees: linden, poplar, maple, oak, beech, acacia, and willow. Under one of the trees a treasure is buried. Lukáš found out from the guardian of the island that if he walks past the trees up, down (linden, poplar,
Cut trees
There are 1,200 trees in the grove, of which 55 percent are deciduous, the remaining coniferous. Workers cut down 35 percent of a) trees, b) deciduous trees, and c) coniferous trees. How many trees now have this grove?
Cement consumption calculation
During concreting, the workers used 1/2 of the total amount of cement on the first day, 1/2 of the rest on the second day, and the remaining 15 q of cement on the third day. How much cement did they consume in total?
Sparklers
Roman lit his 10 equally-sized sparklers one by one on New Year's Eve. He lit the first one. When only one tenth of it remained, he lit the second one; when only one tenth of that remained, he lit the third, and so on. The sparklers burn at a constant rat
Pool bucket emptying
How many five-liter buckets will empty the pool measuring 2.4m and 2.8m, and 1.4m deep?
Meteorological measurement
The meteorological measurement showed the evening temperature at 18:00 at 21.3 degrees. At 21:00, the mercury on the thermometer stopped at 20.5 degrees. By how many degrees did the evening temperature drop in 3 hours?
Square garden calculation
The square garden has an area of 735 m² and is completely fenced. Calculate the length of the garden side and the length of its fence.
Break time
Calculate how much percent of school time is spent on breaks. Calculate data for the whole week.
Fraction comparison puzzle
Which is more than two-thirds of the 99 or three-quarters of the 80?
Barrel
The barrel of wine is filled by 9/14. What part of the barrel will remain filled when 1/4 of the wine we pour from the barrel?
Boys school count
Two-thirds of boys are in sports school. How many boys are there in school if there are 212 girls?
Year 2020
The four-digit number divided by 2020 gives a result of 1, **. (Can not be in form 1,*0. ) Write all the options.
Cylinder surface calculation
The area of the cylinder shell is 300 cm², the height of which is equal to the diameter of the base. Find the surface of the cylinder.
The cuboid
The cuboid is full to the brim with water. The external dimensions are 95 cm, 120 cm, and 60 cm. The thickness of all walls and the bottom is 5 cm. How many liters of water fit into the cuboid?
Three-digit number composition
How many three-digit numbers can be composed of 0.5,9 digits?
45th birthday
This year Mrs. Clever celebrated her 45th birthday. Her three children are now 7, 11, and 15 years old. How many years will Mrs. Clever's age equal the sum of her children's years?
Kilowatt-hours
If the Lewis family used 648 kilowatt-hours of electricity in 12 days at the same usage rate, how many kilowatt-hours should they use in 24 days?
Garden netting comparison
Mr. Norton's rectangular garden measures 35 m and 27 m. Mr. Shaw's square is 29 m long. Who uses more netting to fence their garden, and how much?
Bridge length calculation
The city plan has a scale of 1:1500. Find the actual length of the bridge, which measures 1.1 cm on this plan.

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