Maths practice for 12-year-olds - page 351 of 356
Number of problems found: 7113
- Potatoes
Potatoes contain 77.6% starch. How many potatoes need to obtain 71.8 kg of starch? - Colors
Arnold received 7 coloured pens of different colours for their birthday. In how many ways can they be arranged side by side in a pencil case? - Map
A forest has an area of 77 ha. What area does it occupy on a map at scale 1:10000? - The pipeline
How long is a pipe with an outer diameter of 1.4 m if painting it consumed 35 kg of paint? One kilogram of paint covers 9 m². - Raffle
In the pool number from 1 to 109. What is the probability that a randomly selected number is not prime? - Divisibility
Determine all divisors of a number 91. - Inflation
What is better for people (employees)? ... - 4-gon
Is it true that a quadrilateral with two parallel sides and the other two sides of equal length is necessarily a parallelogram? - Strange x
For what x is true x=19x? - Circumscription
Calculate the radius of the circumscribed circle of a rectangle with sides 3 and 6. Can a circle be inscribed in a rectangle? - Cable
A cable consists of 5 strands, each strand made up of 11 wires with a diameter of d = 0.3 mm. Calculate the total cross-sectional area of the cable. - Money
Everyone complains about a lack of money. In reality, there is no shortage of money — only a relative scarcity of goods and services. By what percentage would the prices of all goods and services immediately rise if everyone suddenly had 9 times more mone - Square
Calculate the area of a square with diagonal 17 cm. - Determine the number
Determine the number x that x+8 is (7)/(5) from one half of 7 x -1. - Rates
When gas consumption, the consumer may choose one of two rates: rate A - which pays 0.4 € per 1 m³ of gas a flat monthly fee of 4.2 € (regardless of consumption) rate B - which pays 0.351 € per 1 m³ of gas a flat monthly fee of 10.1 € From what monthly co - Diagonal
Can a diagonal of a rhombus be twice as long as its side? - 3-bracket 3
Two angles of a triangle are 90° and 45°. Does the triangle have at least two equal sides? - 3-bracket
Can the largest angle in a triangle be less than 20°? - Diagonal
Can a diagonal of a rhombus be equal in length to its side? - Chord
A point on a circle is both an endpoint of a diameter and an endpoint of a chord whose length equals the radius. What is the angle between the chord and the diameter?
Do you have unsolved math question and you need help? Ask a question, and we will try to solve it. We solve math question.
