Multiplication - examples - page 3

  1. Unknown number 2
    num_sphere I think the number. When he reduces it four times, I'll get 14. What number am I thinking?
  2. Drunk man
    drunk-man Drunkman has 2.1‰ of alcohol in the blood. How many grams of alcohol has in blood, if he have 6 kg of blood?
  3. Forest ranger
    srny Forest ranger watching from the hide deers. At one time point he can see 6 deers. How many maximum deers can be see by 3 rangers at same time?
  4. LCM
    calc_icon What is the least common multiple of 28, 42, 22?
  5. Decimal expansion
    books Calculate: 5 . 100 + 0 . 1 + 0 . 100000 + 5 . 10 + 8 . 1000 + 8 . 10000 =
  6. Chocolate
    cokolada_1 How many times should be broken chocolate consisting of 7 × 10 pieces to get the 70 parts?
  7. Time
    time Write time in minutes rounded to one decimal place: 1 h 42 m 22 s.
  8. Theater
    SND The theater has in each row with 11 seats. Ticket to the first 8 rows is for 198 KČ. In next rows is for 84 KČ. The theater was completely sold out. Revenue was 34980 KČ. How many rows are in the theater?
  9. Discount
    pulover Ladies sweater was twice discounted. First by 17%, then by 17% of the new price. Its final price was 72 USD. Determine the original price of sweater.
  10. Bonus
    moeny Gross wage was 1113 USD including 16% bonus. How many USD were bonuses?
  11. Pool
    swimming-pool The swimming pool is 6 m wide and 14 m long and 185 cm deep. How many hectoliters of water is in it, if the water is 9 cm below its upper edge.
  12. Compare II
    powers Which of the numbers 158, 815 is greater?
  13. Chocolates
    Chocolate In the market have 3 kinds of chocolates. How many ways can we buy 13 chocolates?
  14. Average
    gaussian Average of 5 numbers is 135. What is its sum?
  15. Aircraft
    787 If an airplane flies 730 km/h for 2.2 h, how far does it travel?
  16. Hole
    vykop They fill shape hole with dimensions 2.5 m, 18 m, 11.8 m with 260 m3 of soil. How many percent it fill up?
  17. Diophantus
    diofantos_1 We know little about this Greek mathematician from Alexandria, except that he lived around 3rd century A.D. Thanks to an admirer of his, who described his life by means of an algebraic riddle, we know at least something about his life. Diophantus's youth l
  18. Number
    numbers_10 Which number is 17 times larger than the number 6?
  19. Zucchini
    cukety One zucchini costs 5 CZK. How much would cost four?
  20. Committees
    globe How many different committees of 2 people can be formed from a class of 29 students?

Do you have interesting mathematical example that you can't solve it? Enter it and we can try to solve it.

To this e-mail address we will reply solution; solved examples are also published here. Please enter e-mail correctly and check whether you don't have a full mailbox.