Multiplication - examples - page 10
- Water in body
Water in the human organism of all the compounds represented, constitutes about 3/5 of the total weight. How many kilograms of water is in your body when you weigh 64 kg?
- Sum of series
Determine the 6-th member and the sum of a geometric series: 4+4/3+4/9+4/27+4/81+4/243+....
Both dimensions of the rectangular parcel were increased by 40%. By how many % has increased its acreage?
Francisco got birthday 4 colour pens in different colors. How many ways he can give them side by side in pencil?
- A three-digit numbers
Determine the total number of positive three-digit numbers that contain a digit 1.
61% of pupils at the school to eat in the canteen, 1/61 of students who eat in the canteen eat lunch soup. a) What percentage of pupils who eat in the canteen and eat soup for lunch? b) What percentage of all pupils of school eat lunch soup?
The class has 22 students. 2 of which has assesement of 2. Count of assesement of 1 is three times more than count of students with assesement of 3. How many students has assesement of 1 and how many students has assesement of 1.
Triangle whose sides are midpoints of sides of triangle ABC has a perimeter 84. How long is perimeter of triangle ABC?
How many times will increase the volume of a cuboid, if one dimension is twice larger, second dimension three times larger and third dimension four times lower?
Imagine that the saw blade with diameter 35 cm has one tooth colored with a different color. How long is path describing by the tip of the tooth after 7 minutes, if the blade is rotated 4704 times?
Wood cube with edge 10.5 cm weights 0.434 kg. What weight have 10, 100 and 1000 these cubes?
- UV radiation
The glass of 1 mm thickness absorb 4.6% of UV radiation passing through. How many percent of UV rays absorb glass with a thickness 2.1 cm, made from 1 mm thick those glasses?
The boys changed stamps, beads and balls. For 50 balls is 35 stamps, 20 balls is 28 stamps. How many beads is for 1 ball?
- Big factorial
How many zeros end number 710! ?
- Cube 3
How many times will increase the volume of a cube if we double the length of its edge?
- Heart as pump
Heart pumps out 5.17 liters of blood in 1 minute. How many liters of blood pumped per hour and how much per day?
Michal, Peter, John and Lenka got together 2,400 euros. They share an amount in ratio 2:6:4:3. How many got each of them?
- Hot air balloon
Hot air balloon ascends 25 meters up for a minute after launch. Every minute ascends 75 percent of the height which climbed in the previous minute. a) how many meters ascends six minutes after takeoff? b) what is the overall height 10 minutes after launch
- Travel by bus
Five girls traveling by bus. Each holds in each hand two baskets. Each basket contains 5 cats. Each cat has 5 kittens. 3 girls getting off the bus and another girl without baskets go on board. The bus control driver. How many legs are in the bus?
- Right triangle
Right triangle legs has lengths 313 dm and 236 mm. Calculate the area of this triangle.