Divisibility - practice for 12 year olds - page 3 of 10
Number of problems found: 198
- Beginning 47553
At the beginning of the year, they received 600 notebooks. There were twice as many unlinked as lined ones. How many students are in the class when each has 16 unlined notebooks? - Consecutive 47033
The sum of three consecutive odd numbers is 183. What is the largest of them? - Consecutive 47011
The sum of two consecutive odd numbers is 184. What are these numbers? - The dice
Find the probability that a number divisible by two or three will fall when the dice are rolled.
- Even/odd numbers
What is the product of 0.97 and the following odd decimal number? - Probability 41101
What is the probability of a random event A that a) an even number, b) a number divisible by three, c) a number greater than six will fall on the dice roll. - Probability 41091
What is the probability that an odd prime will fall on a dice roll? - Entertainment 41081
In the entertainment lottery, they draw one number from 1 to 35. What is the probability that they will draw an odd compound number? - Divisors 40571
All common divisors of headings 90 and 48
- Together
The three friends divided the balls in a ratio of 6:5:4. Some two got 126 balls. How many balls were there together? - All pairs
Find all pairs (m, n) of natural numbers for which is true: m s (n) = n s (m) = 70, where s(a) denotes the digit sum of the natural number a. - Prime divisors
Find 2/3 of the sum's ratio and the product of all prime divisors of the number 120. - Summer camp
Some boys or girls signed up for the summer camp, which has a maximum capacity of 200 children. The main leader noticed that during the evening start, he could arrange the participants exactly in the twelve-step, sixteen-step, or eighteen-step, and no one - Tractor wheels
The tractor's front wheel has a circumference of 18 dm and the rear 60 dm. We will make a red mark on the lowest point of both wheels. The tractor then starts. At what distance from the start will both marks appear identically at the bottom again?
- Three
Three buses follow the same circular route. The first driver is the slowest because he has many stops, and it takes him 90 minutes to cross the route. The second driver will pass the circuit in 1 hour. The third driver has the fewest stops, and the circui - Pegs
From two sticks 240 cm and 210 cm long, it is necessary to cut the longest possible pegs for flowers so that no residues remain. How many pegs will it be? - Divisible by nine
How many three-digit natural numbers in total are divisible without a remainder by the number 9? - Consecutive 31611
The sum of two consecutive natural numbers, of which the greater is 4x, equals the number 55. Determine the number x. - Numbered 31051
Pavel walks down the street on the side where the houses are numbered with even numbers. From the number 2, count the number of twos in the house numbers. He stops at home, in front of which he counts the fifteen two. What is the number of this house?
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Divisibility - practice problems. Maths practice for 12-year-olds.