Maths practice for 12-year-olds - page 202 of 350
Number of problems found: 6986
- A jewelry
A jewelry store has 20 grams of gold. How many grams are not used if a pair of earrings need 1/4 gram of gold? - Probability 8408
From the group of 18 players I am, the coach selects nine players. What is the probability that I will be among the players chosen? - Volume 8406
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? - Circumference 8395
The circle's circumference is 321 dm larger than the diameter of the circle. What is the average? - 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? - Kilometers 8386
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? - Block-shaped 8378
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. - Remaining 8355
Grandma baked 40 cakes. Jurko ate the eighth, Katka the fifth, and Janko the remaining half. How many cakes did Grandma have left? - Entertainment 8353
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) - Generated 8349
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 - Fractions 8348
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? - Inflow 8339
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?
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