Identity

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

Result

x =  100

Solution:

Try another example

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

Showing 0 comments:

Be the first to comment!

Next similar math problems:

1. Three numbers
   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. Skiing
   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?
3. Mystery number
   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?
4. Roman numerals +
   Add up the number writtens in Roman numerals. Write the results as a decimal number.
5. Book
   Jitka read on holidays book that has 180 pages. In the first week read 45 pages. In the second week she read 15 pages more than the first week. How many pages left to read it yet?
6. Postal 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)?
7. Bus 2
   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?
8. Car parking
   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?
9. Bus
   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. Mom and dad
    Mom wants talk with dad 2.2 hours. But dad wants of 2 times more hours than mom ... How many hours wants dad talk with mom? ...
11. Collection
    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?
12. Roman numerals 2+
    Add up the number writtens in Roman numerals. Write the results as a roman numbers.
13. Euro
    I have 1 euro. How much will I have when you spend it on?
14. No. 215
    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?
15. Baking
    There are 28 bunches, and son ate 1/2, dad ate four bunches. How many of them remain on the baking dishes?
16. Roman numerals
    Write numbers written in Roman numerals as decimal.
17. What is missing (1000)
    What number is to add to get 1000?