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:
Determine unknown number if you know that difference between five times and triple of number is 42.
- Unknown number xyz
Find the number that its triple is 24. Solve by equation.
- 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?
- Roman numerals 2-
Subtract up the number writtens in Roman numerals. Write the results as a roman numbers.
- Roman numerals +
Add up the number writtens in Roman numerals. Write the results as a decimal number.
- Cords joining
Mum needs 6 cords long 360cm long. How many does she need when they are sold at 9 meters and does not want to join it up?
- 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.
- If-then equation
If 5x - 17 = -x + 7, then x =
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?
Solve equation: 4(a-3)=3(2a-5)
- Simple equation
Solve for x: 3(x + 2) = x - 18
1/3 poppy cake, 1/3 apple, 15 pieces of cheese. How many are totally cakes?
In the city operates 171 doctors. The city has 128934 citizens. How many citizens are per one doctor?
Prove whether you can construct a triangle ABC, if a=9 cm, b=10 cm, c=4 cm.
9 trees in 5 lines grows in the orchard. How many trees are in the orchard?