Maths practice for 9-year-olds - page 20 of 21
Number of problems found: 404
- Cars
Johnny has 250 cars. Peter twice less. How many vehicles have Peter?
- ZOO
In the zoo were elephants, as many as ostriches. Monkeys were four times more than elephants. Monkeys were as many as flamingos. Wolves were five times less than flamingos. How many of these animals were together? We know that there were four wolves.
- Workshop
The workshop has to be produced for 5 days 2000 components. How many components must be produced in the workshop daily, and how much per hour if the shift is 8 hours?
- Curtains
Hanak bought 50 m curtains. The dining room needed 90 m and 90 m to the hallways of curtains. How many meters of curtains were bought in total?
- Theatre
The theatrical performance started at 10:50 and ended at 13:50. How many minutes long?
- CDs
Adam has 6 CDs more than Filip and 7 CDs less than Dominica. Filip has 6 CDs. How many CDs have Adam, and how many CDs has Dominika?
- Piggy
A man bought a pig for € 65, then sold it for € 75. Then again bought it for € 90 and sold it for € 100. How much € earned?
- Car amortization
Assume that the car has a life 11 years and a new cost 19000 euros. Calculate how much a month is amortized cost of the car over its lifetime. Amortization is the gradual reduction of assets (cars, buildings), mainly due to use or aging.
- Right angled
We built a square with the same area as the right triangle with legs 17 cm and 17 cm. How long will be the side of the square?
- Ton's teeth
Calculate at what age homeless Anton will be toothless. At age 29 has 26 teeth, and each year next tooth breaks.
- Weeks
22 weeks is equal to how many days?
- Grandchildren
Grandma bought new briefcases for her grandchildren. Pavel got a blue briefcase for 1350 CZK, and Markétka got a red briefcase, which was 270 CZK more expensive than Pavl's. How much did the red briefcase cost? How much CZK did Grandma pay for both briefc
- Computer
A print line on a computer contains 64 characters (letters, spacers, or other chars). Find how many characters there are in 7 lines.
- Life
Calculate how many years has man lived for 27869 days?
- Efficiency of rail
With subsidies, is business easy? Calculate how much a rail ticket (x) would cost at today's ticket price € 11 if the government did not subsidize the trains. It is known that it would cost three times today's ticket without subsidies. Calculate the value
- RBA
Regional Building Authority has an annual budget of EUR 1806814. In the previous calendar year, has processed 804 approval procedures. How much does an average one-building approval cost (e.g., unsuccessful revoke)?
- Textbooks
After checking the textbooks, it was found that teachers should withdraw every 9-th textbook. Together, 176 textbooks were withdrawn. How many textbooks were in stock before being withdrawn, and how many after withdrawal?
- Balls
I have 12 balls, and my friend has 21. About how many have my friend more balls?
- Three cats
If three cats eat three mice in three minutes, after which time 70 cats eat 70 mice?
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