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. Tailor
    krejci Tailor has an estimated 11 meters of 80 cm wide fabric. He will shape wholly 7 rectangles measuring 80 x 150 cm and nothing fabric does not remain. How many fabric he have?
  3. 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?
  4. 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?
  5. Office rent
    futbal-stadion For rent 1m2 of office space is paid €165 per year. How much is the annual rent for an office as big as a football field with dimensions 71.5 m and 102.5 m?
  6. A three-digit numbers
    clocks_1 Determine the total number of positive three-digit numbers that contain a digit 1.
  7. Math logic
    children_7 There are 20 children in the group, each two children have a different name. Alena and John are among them. How many ways can we choose 8 children to be among the selected A) was John B) was John and Alena C) at least one was Alena, John D) maximum one w
  8. Katy
    shipment Kate paid for the package on delivery of four meters textile 688 CZK. What is the price of one meter textile when shipping and handling amounted to 48 CZK?
  9. 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.
  10. 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?
  11. Colors
    peracnik Francisco got birthday 4 colour pens in different colors. How many ways he can give them side by side in pencil?
  12. Numbers
    ceruza By how many is the difference of numbers 8 and 34 less than its product?
  13. Wood
    wood_cube Wood cube with edge 10.5 cm weights 0.434 kg. What weight have 10, 100 and 1000 these cubes?
  14. 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?
  15. Big factorial
    sierpinski How many zeros end number 710! ?
  16. Right triangle
    right_triangle Right triangle legs has lengths 313 dm and 236 mm. Calculate the area of this triangle.
  17. 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?
  18. Cube 3
    krychle_2 How many times will increase the volume of a cube if we double the length of its edge?
  19. 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
  20. Book
    math_book John read the book so that it read 35 pages per day. Maxim read 42 pages a day and read it two days earlier than John. How many pages has the book?

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