Maths practice for 12-year-olds - page 207 of 355
Number of problems found: 7083
- Cube water drainage
In a minute, 100 l of water flows out of a cube with a volume of 1000 m. How long will it take to empty? - Temperature difference 2
The temperature in London on New Year's Day is -2 degrees Celsius. The temperature in Prague on the same day is -14 degrees Celsius. What is the temperature difference between the two cities? - Temperature difference
Libya's highest temperature was recorded at 58 degrees Celsius, and the lowest was recorded at -88 degrees Celsius. What is the temperature difference? - Two Cars Chase Distance
At 10 a.m., a passenger car left Pardubice toward Chomutov at a speed of 65 km/h. A passenger car drove in the same direction at 10:30 a.m. at an average 75 km/h speed. The distance between Pardubice and Chomutov is 250 km. When will the second car catch - Minutes - decihour
John ran the track for one decihour. How many minutes did he run? - Garage painting calculation
How much paint does Peter use to paint a block-shaped sheet metal garage (without the lower base) with dimensions of 8m, 5.5m, and a height of 2.5m, if 1kg of paint is enough for a 4m square area? - How high
How high does a prism with base dimensions of 1.7 dm and 5 dm reach if 1032 dm cubic will fit? - Sphere VS
Find the surface and volume of a sphere with a radius of 2 dm. - Grandma cake sharing
Grandma baked 40 cakes. Jurko ate the eighth, Katka the fifth, and Janko the remaining half. How many cakes did Grandma have left? - Magazine subscription overlap
Twenty-two pupils attend class 4A. Of these, 12 pupils subscribe to a research magazine, 5 pupils subscribe to an entertainment magazine, and 8 pupils do not subscribe to any of these magazines. How many pupils subscribe to both magazines? - Simplify
Simplify powers multiplication: (3+2²)(5-4²) - Four-digit numbers
The numbers 1,2,3,4,5 are given. Role: a) how many 4-digit numbers can we create if the digits cannot be repeated? b) how many generated numbers will not contain the digit 1? c) How many of the generated numbers will be divisible by 5? d) How many of the - Fraction between fractions
Find at least one fraction lying between fractions 3/7 and 4/7, and find at least one fraction lying between fractions 3/2 and 5/3 - A sculptor
A sculptor is duplicating a statue based on an original statue. If the scale factor of the replication is 3.2, will the new statue be larger or smaller than the original statue (enter 1 = larger, 0= smaller) - Trip kilometers
The route of the tourist trip measures 28 cm on a map with a scale of 1:50000. The average walking speed is 4km/h. How many kilometers does the trip measure? How many hours will the students spend on the trip? - Summerjob
Temporary workers Franta ties a sheaf of hay in 20 minutes, Lojza only a quarter in the same time. How many sheaves do they tie together in 8 hours? - Well water inflow
The inflow to the well has a flow rate of 15 l / s. How long does it take for 3 m³ of water to flow into the well? - Telephone numbers
How many 7-digit telephone numbers can we put together so that each number consists of different digits? - Five-Digit Numbers Last Digit How many 5-digit numbers without repetition have the last digit two smaller than the previous one?
- Electing Commander and Representative
How many ways can a commander and a representative of a 20-member group be elected?
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