Maths practice for 12-year-olds - page 258 of 351
Number of problems found: 7009
- Dealer 5295
The dealer sells a TV for 750 euros. If he sells it, he must pay 20% VAT to the state. How many euros will he pay for the sale of one TV? - VAT on books
The cost of a book in the store is 12.5 euros. How many euros is the VAT of this book? VAT is 10%. - Cooling liquid
Cooling liquid is diluted with water in a ratio of 3:2 (3 parts by volume of coolant with two volumes of water). How many coolant volumes must be prepared for a total of 0.7 dm³ (liters) of the mixture? - Line segment
Cut a line segment of 15 cm into two line segments so that their lengths are in a ratio of 2:1. What length will each have? - Brackets 2
Add parenthesis to make true: 5-2×6-4+2=5 - Percentage 5282
The car consumes 6.7 liters per 100km 2. The car consumes 108ml per 1500m. What percentage of more or less gasoline does the 1st car use than the 2nd car to cover the same distance? - Motorcycle and car
A car travels 11000 decimeters per minute, and a motorcycle travels at a speed of 330 meters in 11 seconds. They leave Prague from the same place, and the motorcycle leaves 45 minutes later behind the car. Who will be closer to Vimperek after an hour and - Finished 5279
Štěpán is planting trees. If he had planted 12 trees every hour instead of 9 trees, he would have finished 1 hour earlier. How many stems should he plant? - Dimensions 5278
How much does it cost to lay a floor in three classes if each class has dimensions of 8m by 6m and a square meter of 1m costs 15eur? - Numbers 5276
What is 2/3 of the sum of numbers (0.10) and (-5.3)? - Calculate 5274
Calculate the second sum if you know that one sum is -124.6 and the resulting sum is (-200). - Mixing operations with numbers Subtract twice the number -23.6 from the difference between the numbers -130 and -40.2.
- Difference 5269 Calculate the difference between the sum of the numbers 1.04 and 0.56 and the product of the numbers opposite to them.
- Temperature 5268
In the evening, Zuzana measured the air temperature at -2.4 °C. In the morning, she measured the temperature three times lower. What temperature did Zuzana measure in the morning? - Christina - Samuel
Samuel is 2 cm higher than the average height of the pupil in the class. Christina is 7 cm lower than the average height. How taller is Samuel than Christina? - Temperature 5263
Calculate the average daily temperature from 8 measured values during the day: -8; -5; -5; 1; 3; 0; -4; -6 °C ... - Calculate 5261
Calculate the second summand if you know that one summand is 28.6, and the result of the sum is -100. - Underground 5258
A skyscraper occupied his car in an underground garage marked with buttons in elevator number -3. He drove to his floor, number 26. How many floors did he take in the elevator? - Archimes 5257
Archimedes was born in -287. Caesar was born in -101. How many years later was Caesar born? - Calculate 5255
The area of the square is equal to 2.56 square meters. Calculate its diagonal.
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