Multiplication - examples - page 10

  1. Water in body
    Water-in-human-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?
  2. Sum of series
    question Determine the 6-th member and the sum of a geometric series: 4+4/3+4/9+4/27+4/81+4/243+....
  3. Parcel
    land_parcel Both dimensions of the rectangular parcel were increased by 40%. By how many % has increased its acreage?
  4. Colors
    peracnik Francisco got birthday 4 colour pens in different colors. How many ways he can give them side by side in pencil?
  5. A three-digit numbers
    clocks_1 Determine the total number of positive three-digit numbers that contain a digit 1.
  6. Soup
    polevka 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?
  7. Students
    reportcard 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.
  8. Midpoints
    sierpinski_1 Triangle whose sides are midpoints of sides of triangle ABC has a perimeter 84. How long is perimeter of triangle ABC?
  9. Cuboid
    Cuboid_BBC 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?
  10. Saw
    kotuc 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?
  11. Wood
    wood_cube Wood cube with edge 10.5 cm weights 0.434 kg. What weight have 10, 100 and 1000 these cubes?
  12. UV radiation
    uv_rays 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?
  13. Balls
    farebne-gulky 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?
  14. Big factorial
    sierpinski How many zeros end number 710! ?
  15. Cube 3
    krychle_2 How many times will increase the volume of a cube if we double the length of its edge?
  16. Heart as pump
    srdce Heart pumps out 5.17 liters of blood in 1 minute. How many liters of blood pumped per hour and how much per day?
  17. Euros
    fractal_1 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?
  18. Hot air balloon
    balon 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
  19. Travel by bus
    cats_1 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?
  20. Right triangle
    right_triangle Right triangle legs has lengths 313 dm and 236 mm. Calculate the area of this triangle.

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