Adela thought the two-digit number, she added it to its ten times and got 407. What number does she think?
Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):
Showing 0 comments:
Be the first to comment!
To solve this example are needed these knowledge from mathematics:
Next similar examples:
- Unknown number xyz
Find the number that its triple is 24. Solve by equation.
- 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?
- I think
I think a number. When I multiply it by five, and after that I subtract 477, I get the same number as if I multiplied it twice. What number do I think?
- What is missing (1000)
What number is to add to get 1000?
- Primes 2
Which prime numbers is number 2025 divisible?
- Roman numerals
Write numbers written in Roman numerals as decimal.
One of the summands is 186. The second is 15 more. Determine the sum of the summands.
- Bread to kilos
They brought in d two kilos and t three kilos of bread to the store. By the end of the day, 14 two-kg bread were sold. How many kilos of bread remained in the store by the next day?
- Mom and daughter
Mom is 30 years older than the daughter. What is the age difference between them in 35 years?
- Temperature 2
Sunday's high temperature was 3 degrees higher than Saturday's. On Monday, the temperature fell 5 degrees, then rose 7 degrees on Tuesday and 4 more on Wednesday. Then it fell 17 degrees to a record low of 31 on Thursday. What was the temperature on Saturd
Solve equation: 4(a-3)=3(2a-5)
The rooms in the mountain hotel are double and triple. Double rooms are 25 and triple are 17 more. How many rooms are there in this hotel?
- If-then equation
If 5x - 17 = -x + 7, then x =
9 trees in 5 lines grows in the orchard. How many trees are in the orchard?
- Forest nursery
In the forest nursery after winter, they found that 1/10 stems died out of them. For them, they land 193 new spruces. How many spruces are in the forest nursery?
1/3 poppy cake, 1/3 apple, 15 pieces of cheese. How many are totally cakes?
- Jam cakes
Mom baked a third of plum jam cakes, one third cheesecakes and 18 poppy. How many cakes she had bake?