Identity

123456789 = 100
Use only three plus or minus characters to correct previous identity/equation.

Result

x =  100

Solution:

Solution in text x =







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

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




To solve this example are needed these knowledge from mathematics:

Next similar examples:

  1. Three numbers
    dice How much we increases the sum of three numbers when the first enlarge by 14, second by 15 and third by 16? Choose any three two-digit numbers and prove results.
  2. Mom and dad
    love Mom wants talk with dad 3 hours. But dad wants of 2 times more hours than mom ... How many hours wants dad talk with mom? ...
  3. Baking
    buchty_3 There are 28 bunches, and son ate 1/2, dad ate four bunches. How many of them remain on the baking dishes?
  4. Skiing
    sneh Ski gondola starts at a distance of 975 m from the top and is 389 meters long. I went to the bottom station to the top station. How many meters I must go to the top of hill?
  5. Roman numerals 2+
    rome-italy_1 Add up the number writtens in Roman numerals. Write the results as a roman numbers.
  6. Roman numerals +
    rome-italy Add up the number writtens in Roman numerals. Write the results as a decimal number.
  7. Euro
    1euro I have 1 euro. How much will I have when you spend it on?
  8. Postal stamps
    stamps Jano and Peter exchanged postal stamps. Jano gave Peter 32 stamps of the missile for 8 stamps with turtles. How good was Jano after this exchange (how many he has surplus in exchanged stamps)?
  9. Bus
    bus_4 On the 4-th stop take on 56 and take off 38 passengers. How many were added (write as positive number) or shrunk (write as negative number) the count of passengers?
  10. Tulips and daffodils
    kvety Farm cultivated tulips and 211 units on 50 units more daffodils. How many spring flowers grown together?
  11. Mystery number
    numbers2_38 A mystery number is between 800 and 920. No digits are the same. The difference of the number is 5. What is the mystery number?
  12. Roman numerals
    roman_1 Write numbers written in Roman numerals as decimal.
  13. Collection
    calendar Majka gave from her collection of calendars Hanke 15 calendars, Julke 6 calendars and Petke 10 calendars. Still remains 77 calendars. How many calendars had Majka in her collection at the beginning?
  14. Bus 2
    bus2 On the 6-th stop 44 passengers take off from bus. Overall, the 6-th stop 13 passengers were added. How many passengers take on 6-th stop?
  15. Car parking
    motocycles The car park has 45 motorcycles and 25 cars. 14 cars went away and 2 arrived, then departs 12 motorcycles and 2 arrive. How many motorbikes and cars there are now?
  16. What is missing (1000)
    red_minus What number is to add to get 1000?
  17. No. 215
    215_num From the number 215 we can create a four-digit number that among its numbers manually type any other digit. Thus, we created two four-digit numbers whose difference is 120. What two four-digit numbers that might be?