Multiplication - examples - page 13
- Hexadecimal number
What will be hexadecimal number 240 as decimal number?
Salesman account for 2.3 meters of wallpaper 149.50 Kc. How much cost 1 meter of wallpaper?
On a Concert were sold 150 tickets for CZK 360, 235 tickets for 240 CZK and 412 for 180 CZK. How much was the total revenues for tickets?
- Two friends
Two friends met as a good man perish together for a beer. After recovery the most important topics (politics, women, football ...), one asks: - And how many do you have children? - I have 3 children. - And how many years have? Friend already not want to an
Determine the value of the following exspressions: a) (23-25)·(4-5) b) (97-123):(18+8)
Dad has two years more than mom. Mom has 5 times more than Katy. Katy has 2 times less than Jan. Jan is 10 years old. How old is everyone in the family? How old are all together?
- How manz
By how many is the product of the numbers 328 and 7 greater than its sum?
The cost of producing briefcase is € 45. The manufacturer wants to sell it at a profit 30%. For how much will briefcase sell?
Farmers loaded into a truck of fruit and vegetables intended for the store. 10 boxes of 5 kg pears, 8 boxes of 6 kg plums, 7 boxes 9 kg of carrots and 10 bags of 50 kg of potatoes. How many kilograms of fruit and vegetables loaded in total? How many kg cou
- Concrete pedestal
The carpenters made wooden mold on a concrete pedestal in the shape of a cube with edge 2 meter long. What is the area in which the concrete touches wooden molds? (No lid or bottom)
- Expression 1
What is 7+8-(5×2)+5-4+(6×(5-3)+6)-(8+10)-7+6?
Expression (3a-7).(3a+7) is identical with: ?
- Value of teeth
To know value to the healthy teeth we discover only when we take care about tooth caries followed by loss of teeth and think how to replace missing teeth... Calculate the value (cost of money) healthy teeth, if we assume that man has with 32 teeth and rep
Divide: a) 250 CZK in the ratio 2:3 b) 1000 CZK in the ratio 4:7:9
- Cube 2
How many times will increase if the surface area of the cube if we triple length of its edge?
- Cylinder twice
If the radius of the cylinder increases twice, and the height is reduced twice, then the volume of the cylinder increases (how many times?):
How many times increases the surface area of a cube with edge 43.6 cm if the length of the edge doubled?
- The tap
For one day flows 148 l of water out of the tap. How much water will flow out for 3/4 day?
- Star equation
Write digits instead of stars so that the sum of the written digits is odd and is true equality: 42 · ∗8 = 2 ∗∗∗
- Eight palm
There grows 8 palms by the sea. At the first sitting one parrot, on second two, on third sits four parrots on each other twice the previous parrots sitting on a previous palm. How many parrots sitting on eighth palm?