Multiplication - examples - page 13
- Hexadecimal number
What will be hexadecimal number 240 as decimal number?
Determine the value of the following exspressions: a) (23-25)·(4-5) b) (97-123):(18+8)
- How manz
By how many is the product of the numbers 328 and 7 greater than its sum?
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?
The cost of producing briefcase is € 45. The manufacturer wants to sell it at a profit 30%. For how much will briefcase sell?
- Expression 1
What is 7+8-(5×2)+5-4+(6×(5-3)+6)-(8+10)-7+6?
- 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
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
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
- 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)
How many times increases the surface area of a cube with edge 43.6 cm if the length of the edge doubled?
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?):
- The tap
For one day flows 148 l of water out of the tap. How much water will flow out for 3/4 day?
Of the 72 wet seeds 7/8 germinated. How many seeds germinate?
We have a virus that lives one hour. Every half hour produce two child viruses. What will be the living population of the virus after 2.5 hours?
- Star equation
Write digits instead of stars so that the sum of the written digits is odd and is true equality: 42 · ∗8 = 2 ∗∗∗
Sick Marcel already taken six tablets, which was a quarter of the total number of pills in the pack. How many pills were in the pack?