Maths practice for 11-year-olds. - page 222 of 224

Number of problems found: 4472

Date game
Let now is Tuesday. What day is after 229 days? Write the result as a number: 1=Monday, 2=Tuesday, 3=Wednesday, 4=Thursday, 5=Friday, 6=Saturday, 7=Sunday.
Isosceles triangle
Calculate the perimeter of the isosceles triangle with arm length 87 cm and base length of 95 cm.
Minute angle
Find the size of the angle, which takes a minute hand for 30 minutes.
Guess number
With what number should be divided, number 10387 to be reduced by 30%?
Angles
The triangle is one outer angle 82°6' and one internal angle 48°36'. Calculate the other interior angles of a triangle.
Tourist
Tourists walk at 4.2 km/h. Every 6 km has a 10-minute break. How many kilometers were walked when they started at 4:40 and finished at 21:40?
Train
The train passes part of the line for 55 minutes at a speed of 70 km/h. What speed would you have to go to shorten the driving time of 16 minutes?
Right triangle
Right triangle legs have lengths 71 dm and 919 mm. Calculate the area of this triangle.
Circle
How big is the area of a circle if its circumference is 51.2 cm?
Fan
The fan has a speed of 217 RPM. Calculate for the time of one fan period.
DIY press
Under the socialist regime, in some socialist countries, owning a typewriter required special permission. That has hindered the spread of DIY literature (manually transcribed through carbon copy paper for typewriters). Calculate how many typewriters today
Aquarium II
Calculate how much glass we need to build an aquarium with a rectangular shape with a base of 65 cm × 52 cm and a height of 74 cm if the waste is 2%. The aquarium doesn't have top glass.
Thrift woman
Calculate how long grandmother will save on new shoes priced 116 euros if she saves 2 Eur monthly.
Number
Calculate the integer number divided by 24, gives 16 and the rest 7.
Air mass
What is the weight of the air in a classroom with dimensions 10 m × 3 m × 3 m? The air density is 1.293 kg/m³.
Solid in water
The solid weighs in air 16.1 kg and in water 13 kg. Calculate the density of the solid.
Promile
Calculate the 17.6 ‰ of 353.
Tesco Clubcard
František got quarterly billing vouchers for Tesco ClubCard, taking goods worth 6.5 Eur. Calculate the average monthly amount Tesco stores bought goods. Tesco ClubCard works for every Euro spent; you get one ClubCard point, which Tesco will convert to one
Father and son
Father and son are 74 years old together. The son is 30 years younger than the father. How old is the son?
Trio
58 children lined up in groups of three. How many children did not create a trio?

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