Math practice for 13 year olds - page 266 of 413
Number of problems found: 8260
- Boy Girl Pairs Class
How many boy-girl pairs can we create from a class of 15 boys and 16 girls? - Is right-angled
Can a triangle with the sides of sqrt 3, sqrt 5, and sqrt 8 (√3, √5, and √8) be a right triangle? - Isosceles
Isosceles trapezium ABCD ABC = 12 angle ABC = 40 ° b=6. Calculate the circumference and area. - The small
The small hand of the wall clock is 15 cm long, which is what a long journey the end of the hour hand in 15 minutes will describe. (b - in 2 hours)? - Two-Digit Numbers Odd Probability
Jano created 2-digit numbers from the cards 2, 4, 5, 9, and 2. What probability will a randomly generated number be odd? - Circular Track Radius
What circular track radius must a runner run six times to run 1.8 km? - Two chords
There is a given circle k (center S, radius r). From point A, which lies on circle k, are starting two chords of length r. What angle do chords make? Draw and measure. - Sweater
Dana confuses me by stating that sweaters and wool have a choice of seven colors. How many ways can she choose from three colors for the sleeves? - No smoke
Tobacco company NO-SMOKE adorned its stand at the cigarette-type trade fair with cigarette-shaped. The dimensions of which were 20 times the size of a regular cigarette. Regular cigarette contains 0.8 mg of nicotine. How much nicotine would a giant cigare - Ladder Length Wall Distance
A ladder leans against the wall. It touches the wall at the height of 240 cm. Its lower end is 100 cm distant from the wall. How long is the ladder? - Cube walls
Find the cube's volume and surface area if the area of one of its walls is 40 cm². - Hectoliters
If a garden barrel with a 90 cm diameter and a height of 1.3 m is filled to 80% of its capacity, how many hectoliters of water is in it? - Concentric circles
A circle K with radius r = 8 cm is given. What radius must a smaller concentric circle have to divide circle K into two parts of equal area? - Double ladder
The double ladder is 8.5 m long. It is built so that its lower ends are 3.5 meters apart. How high does the upper end of the ladder reach? - Book Pages from Fractions
The boy read the book in 4 days. He read a third of the book on the first day and a sixth of the book on the second. On the third day, a quarter of the book was. He was left with 30 pages on the last day. How many pages did the book have? - Lunch
Seven classmates go every day for lunch. If they always come to the front in a different order, will it be enough school year to take off all the possibilities? - Around
Around the circular flowerbed with a radius of 2 m is a sidewalk 80 cm wide. How many square meters does the sidewalk have? - Hops Combing Average Time
The 9th graders picked hops. They worked a few hours on the first day and picked a total of x bushels of hops. On the second day, they worked for b hours and picked y bushels. How long did it take them to pick one bushel on average? Express with expressio - Cube into sphere
The cube has brushed a sphere as large as possible. Determine how much percent the waste was. - Different Report Cards
There are 19 children in class 6 A, 7 subjects, and no one has a grade worse than a C. Can each of them have a different certificate? How many would have to be in the class so that everyone could not have a different report card?
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