Prime numbers - practice problems - page 5 of 23
Number of problems found: 457
- LCD 2
The least common denominator of 2/5, 1/2, and 3/4 - Z7-I-4 stars 4949
Write instead of stars digits, so the next write of the product of the two numbers is valid: ∗ ∗ ∗ · ∗ ∗ ∗ ∗ ∗ ∗ ∗ 4 9 4 9 ∗ ∗ ∗ ∗ ∗ ∗ 4 ∗ ∗ - Decompose
Decompose into primes and find the smallest common multiple n of (16,20) and the largest common divisor D of the pair of numbers (140,100) - Bicycle wheels
The driving wheel of a bicycle has 54 teeth. The driven wheel has 22 teeth. After how many revolutions will meet the same teeth? - Determines 80517
Determines all two-digit numbers that have a greatest common divisor of 19 with the number 76 - Unclassified 6521
No one was left unclassified after joining the two, three, four, and eight steps. How many students were there in a physical education class? - Gradually 2779
I think the number is less than 30. I get it when I gradually add three to zero, when I add four to zero, and when I add eight to zero. What is the number? - How many
How many different rectangles with integer side lengths have an area S = 60 cm²? - Reminder and quotient
There are given the number C = 281, D = 201. Find the highest natural number S so that the C:S and D:S are with the remainder of 1. - Dance ensemble
The dance ensemble took the stage in pairs. During dancing, the dancers gradually formed groups of four, six, and nine. How many dancers have an ensemble? - Apples 2
How many minimum apples are in the cart? If possible, is it completely divided into packages of 6, 14, and 21 apples? - Cherries
Cherries in the bowl can be divided equally among 20 or 15, or 10 children. How many are the minimum cherries in the bowl? - Decompose 37101
Decompose the number of primes and find its digit sum: 180, 232, 460, 240, 365, - Divisible 72004
Find the natural number between the numbers 70 and 80 divisible without the remainder 5, 3, 15, and 25. - Times 7822
How often is D (24.60) less than n (24.60)? - Gcd and lcm
Calculate the greatest common divisor and the least common multiple of numbers. a) 16 and 18 b) 24 and 22 c) 45 and 60 d) 36 and 30 - Perfect square or cube
Would you classify 324 as a perfect square, perfect cube, both, or neither? ... - Compare fractions
Find which is the larger of the two fractions: 11/32, 7/24 by expressing the numbers as: a) fractions with the same denominator; b) decimals. - Rectangles
How many different rectangles can be made from 60 square tiles of 1 m square? Find the dimensions of these rectangles. - Troops
If the general sorts troops into the crowd by nine, left 6. How many soldiers have the regiment if we know they are less than 300?
Do you have homework that you need help solving? Ask a question, and we will try to solve it.