Reason - practice for 12 year olds - page 2 of 29
Number of problems found: 563
- Summands
Find two summands of the number 42 so that its product is minimized. - Coins
On coins found was stated that from the year 87 BC. Is it right? - Secret number
Find the secret number n, which reversed decreases by 16.4 if the number increases by 16.4. - Two dice
We roll two dice. What is the probability that the sum of the falling numbers is greater than 3? - How many
How many numbers are less than 222 with a digit sum is 8? - Digit sum
How many are three-digit numbers that have a digit sum of 6? - Unknown number
Find the unknown number equal to a quarter of a fifth of a number, which is by 152 more than an unknown number. - Christmas Day
In leap years was 53 Sundays. On what day of the week fell Christmas Day? - Log
The worker cut his thick log into six pieces for 30 min. How long did he cut the log to 12 pieces? - Wage
Increasing the minimum wage while maintaining the other parameters of the system, unemployment will be: - Consecutive 29761
Determine three consecutive natural numbers, the sum of which is 66. - Divisible by nine
How many three-digit natural numbers in total are divisible without a remainder by the number 9? - Letters
ABC + DEF = GHIJ replace letters with numbers so that the sum is correct (different letters = different numbers) - Two ages
Gabrielle is nine years younger than Mikhail. The sum of their ages is 87. What is Mikhail's age? - Sick
Sick Marcel had already taken six tablets, which was a quarter of the total number of pills in the pack. How many pills were in the pack? - Four-digit number
Find a four-digit number, which quadrupled written backward is the same number. - Trapezium zoom
How many times increase the area of the trapezoid if all sides and altitude increase 5 times? - Supply 82149
The water supply is enough for 12 horses for 16 days. How many horses will this supply of water last for 12 days? - Number 80500
Which number does not belong in the number series and why? 11. . . 13 . . . 15 . . . 17 . . . 19 - Smallest 80368
What is the smallest whole number to replace the known x for: 9> x/3> 4.
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