Maths practice for 12-year-olds - page 287 of 301
Examples and word math problems for 7th grade.Number of problems found: 6002
- Air
The room is 35.6 m long, 19.6 dm wide, and 591 cm high. How many people can simultaneously be in this room if, for hygiene reasons, is calculated 5000 dm³ of air per person? - Triangle radians
The size of two internal angles of a triangle ABC is α=6/18π and β=7/18π. Calculate the size of the third angle. - Metallurgical enterprise
Metallurgical company daily produces 616 tons of cast iron. How many tons of coke does it burn to melt cast iron when 16 tons of cast consumes 11 tons of coke? - Square
If we increase one side of the square by its one-half, then the square perimeter increases by 10 cm. What is the side of the square?
- Accidents
The count of accidents in 1995 caused 8780 women, which is 8.4%. How many men caused the accidents? - Lie/do not lie
The rule f(x) = -x-10 gives the function. Find whether point C[5; -15] lies on this function. Solve graphically or numerically and give reasons for your answer. - Simple interest
Peter put into bank 853 euros deposit. After 7 years on account, overall was 984 euro. What was the interest rate if the bank added simple interest? - University bubble
You'll notice that the college is up slowly every other high school. Many people in Slovakia/Czech Republic study political science, mass media communication, social work, and many management MBAs. Calculate how many times more earns clever 25-year-old ma - VAT
In the country XYZ car, Daewoo Leganza costs 3748 Euros including VAT; 3335.72 Eur without VAT. a) Determine the rate of VAT. b) How much Euro VAT is paid for the purchase? c) How much percent of the total price of the goods is VAT? VAT = value-added tax.
- Coffee
The coffee from the machine costs 28 cents per cup. Coffee is 20 cents more expensive than the cup. How much is the cup? - The pot
The pot is in 1/3 filled with water. The bottom of the pot has an area of 329 cm². How many centimeters rise in water level in the pot after adding 1.2 liters of water? - Word problem
348 students were on holiday in Hungary. 133 bought pizza, chips 28 pupils, 25 pupils bought soda, butter 26 pupils, 15 pupils fruits, vegetables 29 students. How much pay for all the food, if every meal costs 5.3 euros? - 7 triangle
The triangle area is 26.7 cm². find the side length l if appropriate height hl = 45.3 cm. - Diplomas
Suzanne helped write out diplomas. Issuance first took 3 minutes, each next 2.3 minutes. How much time will it take to write out n=16 diplomas (including the first) at this pace?
- Water tank
The water tank-shaped cuboid has a width of 2.3 m and a length twice as large. If water flows into 19 liters of water per second during 52 minutes, how high will it reach? - Car range
Calculate the maximum range of cars, if you can spend 5 euros, the diesel price is 1.6 Eur/l, and car consumption is 5.4 l/100 km. - Washing machine
The price of the washing machine decreased by 21% and then by 55 € due to small sales. After two price decreases, cost € 343. How much did it initially cost? - Cups
We have three cups. In the cups, we had fluid and boredom we started to shed. 1 We shed one-third of the fluid from the second glass into the first and third. 2 Then, we shed one-quarter cup of liquid from the first to the second and to the third. 3 Then, - President
The country has 5.11 million citizens which 2.12 million are voters. Turnout was 34.4%. President R. F. was elected from 20 candidates for president and won with 38% of votes. Calculate what percentage of the country's citizens voted R.F. as president.
Calculate the length of the diagonal AC of the rhombus ABCD if its perimeter is 84 dm and the other diagonal BD has length 20 dm.Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
