Pencil cut

Veronika cut 10cm pencil. Each turn, the pencil was reduced by 0.2mm. She turned the pencil 100 times. How many centimeters has a pencil now?

Result

x =  8 cm

Solution:

o=0.2 mm=0.2/10 cm=0.02 cm  x=10−100⋅ o=10−100⋅ 0.02=8 cmo=0.2 \ mm=0.2 / 10 \ cm=0.02 \ cm \ \\ \ \\ x=10 - 100 \cdot \ o=10 - 100 \cdot \ 0.02=8 \ \text{cm}

Try another example


Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!





Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!
avatar




Tips to related online calculators
Do you want to convert length units?

Following knowledge from mathematics are needed to solve this word math problem:

Next similar math problems:

  1. Apartment area
    meter Anton wanted to measure the area of the apartment. But he bought a meter only 1.5m long. Later he recalled that he had two meters long at 4.5m and 18m at home. How many times are home gauges longer than the meter he bought?
  2. Steps
    steps Walkway from the house to the school is 180 m long. How many more steps Michael makes than his father on the way to school, if the length of Michael's step is 60 cm and the length of his father's step is 90 cm.
  3. Pound2kilos
    vaha_19 How many pounds make 1 kilograms?
  4. Sick
    tabletky 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?
  5. Recipe
    vaha2_2 A recipe requires 2 pounds of flour. If a chef wants to triple the recipe, how many ounces of flour will be needed?
  6. Bean bag
    bag A student tossed a bean bag. It landed 216 inches away. How many yards are equal to 216 inches?
  7. A swiming
    water2 A swiming pool holds 30000lt of water. How many gallons does it hold? 1 gallon= 4.55lt
  8. Feet to miles
    runners_6 A student runs 2640 feet. If the student runs an additional 7920 feet, how many total miles does the student run?
  9. Customary length
    inch Convert length 65yd 2 ft to ft
  10. Wood dividing
    meter_23 Which equation calculates the number of 1/3-foot pieces that can be cut from a piece of wood that is 7 feet long?
  11. Geometric plan
    map_1 At what scale the building plan if one side of the building is 45m long and 12mm long on a plan?
  12. Athletic race
    olympics Before a race, you start 4 5/8 feet behind your friend. At the halfway point, you are 3 2/3 feet ahead of your friend. What is the change in distance between you and your friend from the beginning of the race?
  13. Midpoints
    sierpinski_1 Triangle whose sides are midpoints of sides of triangle ABC has a perimeter 45. How long is perimeter of triangle ABC?
  14. Tailor
    sijaci_stroj Tailor bought 2 3/4 meters of textile and paid 638 CZK. Determine the price per 1 m of the textile.
  15. The ketchup
    tomato If 3 1/4 of tomatoes are needed to make 1 bottle of ketchup. Find the number of tomatoes required to make 4 1/5 bottles
  16. Rape
    repka The agricultural cooperative harvested 525 ares of rape, of which received 5.6 tons of rape seeds. Calculate the yield per hectare of rape.
  17. Simplify
    square Simplify powers multiplication: (3+22)(5-42)