Natural numbers - examples
- Closest natural number
Find the closest natural number to 4.456 to 44.56 and to 445.6.
- One hundred stamps
A hundred letter stamps cost a hundred crowns. Its costs are four levels - twenty tenths , one crown, two-crown and five-crown. How many are each type of stamps? How many does the problem have solutions?
In the 6th class there are 60 girls and 72 boys. We want to divide them into groups so that the number of girls and boys is the same. How many groups can you create? How many girls will be in the group?
123456789 = 100 Use only three plus or minus characters to correct previous identity/equation.
- Gardens colony
Gardens colony with dimensions of 180 m and 300 m are to be completely divided into the same large squares of the highest area. Calculate how many such squares can be obtained and determine the length of the square side.
- Equation algebraogram
Solve the equation: oco + ivo = cita How much has the task of solutions?
- 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?
One brick is 2 kg and half a brick heavy. What is the weight of one brick?
Charlie bought 7 same chocolates for 14 Eur. How many euros he pay for 27 chocolates?
Is the number 109433 divisible by 7?
Monkey fell in 31 m deep well. Every day her scramble 3 meters, at night dropped back by 2 m. On that day it gets hangover from the well?
We know little about this Greek mathematician from Alexandria, except that he lived around 3rd century A.D. Thanks to an admirer of his, who described his life by means of an algebraic riddle, we know at least something about his life. Diophantus's youth l
Kate thought a five-digit integer. She wrote the sum of this number and its half at the first line to the workbook. On the second line wrote a total of this number and its one fifth. On the third row she wrote a sum of this number and its one nines. Fi
After check of textbooks found that every 8-th textbook should be withdrawn. Together 74 textbooks were withdrawn. How many textbooks were in stock before withdrawn and how many after withdrawn?
- No. of divisors
How many different divisors has number ??
Determine the number of all positive integers less than 2937474 if each is divisible by 11, 23, 17. What is its sum?
How many steps you save if you go square estate for diagonal (crosswise), rather than circumvent on the two sides of its perimeter with 298 steps.
55 weeks is equal to how many days?
In the camp are children. 1/4 went on a trip, 1/2 went to bathe and 99 children remained in the room. How many children are in camp?
Cherries in the bowl can be divided equally among 11 or 16 or 4 children. How many is the minimum cherries in the bowl?