Maths practice for 11-year-olds. - page 167 of 224
Number of problems found: 4479
- Production plan
They have already produced 2,000 parts in their grandfather's workshop, five-sixths of the plan. How many components should they produce in total? - Forest nursery
In the forest nursery after winter, they found that 1/10 of the stems died out of them. For them, they landed 193 new spruces. How many spruces are in the forest nursery? - Garden dimensions
Jirka has a step length of 40 cm. He takes six hundred steps around his grandfather's garden. The length of the garden is three times greater than its width. Jirka wanted to calculate his grandfather's garden's length, width, and area. - Concert attendance
Eight hundred people came to the concert, a quarter more than the organizers expected. How many people did the organizers expect? - Tailor
From the rest of the cloth, the tailor could cut off either 3 m in men's suits without a vest or 3.6 m with the vest. What shortest possible length could the rest of the cloth have? How many suits a) without a vest b) With a vest, could you make the tailo - Hammer ratio
The hammerhead weighs 1 kg and the handle 250 g. What is the weight ratio of these two parts of the hammer? - Guess a fraction
Tom was asked to guess a fraction. The sum of 1/2 of the numerator and 1/3 of its denominator is 30. If Tom subtracts 36 from its denominator, the fraction becomes 1/3. What is the fraction that Tom was asked to guess? (Leave your answer in the simplest f - April (month)
April has 30 days. Roman saves his money in the box for the whole month. Every third day, you save 10 cents. How many cents did Roman save during the entire month he started saving on April 1? - Pills
If it takes 20 minutes to run a batch of 100 pills, how many minutes would it take to run a batch of 50 pills? - Display case
Place a glass shelf at the height of 1m from the bottom of the display case in the cabinet. How long platter will we place at this height? The display case is a rectangular triangle with 2 m and 2.5 m legs. - Thales
Thales is 1 m from the hole. The eyes are 150 cm above the ground and look into the hole with a diameter of 120 cm, as shown. Calculate the depth of the hole. - Martian antennae
Each Martian has 1,2,3 feeler on his head 1 feeler = 2% of the population 2 antennae = 97% of the population 3 tentacles = 1% of the population What percentage of Martians have more antennae on their heads than the population average? - Boys at camp
At the camp, half of the boys went on a trip one day, a third went swimming, and 17 boys had various services. How many boys were there in total at the camp? How many boys were on the trip, and how many were swimming? - Black passengers
Five inspectors will catch an average of 70 black passengers in 6 days. How many black passengers are caught by nine inspectors in 10 days? - Crown coins Jana saves two-crown and five-crown coins. She has 32 coins in the cashier. How many two crowns and how many five crowns would she have if she saved 145 crowns?
- Basement 3
A new construction of a family house is to have a basement. The floor, walls, and ceiling of the basement are to be covered with an asphalt insulating layer. The ground plan of the family house has dimensions of 10m and 12m. The height of the basement inc - Triangle construction
Try to construct the MNP triangle. p = 6cm, n = 5cm, Vp = 4cm Answer the measured side length m - Product of two fractions
The product of two fractions is 9 3/5. Suppose one of the fractions is 9 3/7. Find the other fraction. - Milk bill
If Mrs. Tara buys 2 liters of milk daily, and 1 liter costs $0.27, what will be her milk bill for 30 days? - Rhombus EFGH
Construct the rhombus EFGH where e = 6.7cm, height to side h: vh = 5cm
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