Math practice for 13 year olds - page 38 of 365
Number of problems found: 7283
- Two pieces
Two pieces of cloth 15 and 20 meters long are to be cut into small pieces of equal lengths. What will be the greatest length of each piece? - Three chefs
Let's say you have 3 Chefs that have made 14 cakes in 8 hours. Assuming they are working at the same efficiency, how many hours does it take 10 Chefs to bake 24 cakes? (Rounded to the nearest hour) - You bought
You bought a table with chairs, and you were charged $145.86. The sales tax was 4%, and the set was 15% off. What was the original price? - Water 66
Water flows from a tap into a rectangular tank that measures 64cm by 36cm by 45cm. At 8 p. m., it is 1/4 filled with water. At 9 p. m., it is filled with 69,120 cm³ of water. Find the volume of water that has flowed into the tank from 8 p. m. to 9 p. m. G
- Tree's virus
An arborist examined trees in an orchard to see if they were infected with a virus. 42 out of 75 trees were infected with the virus. What percentage of the trees were infected? Write your answer using a percent sign (%). - A basketball
A basketball team won 11 out of 20 games. What percent of its games were won by the team? - Anthony's
Anthony's book cost $9.50. The tax rate is 7%; find the total cost of the book. - Trinity 2
Trinity has saved $500 for a new car. She recently got a job as a dog walker and added $70. What percent of her original savings got added? - For triangle
For triangle XYZ, ∠X = (6g + 14)° and the exterior angle to ∠X measures (5g + 45)°. Find the measure of ∠X and its exterior angle.
- The perimeter 10
The perimeter of a rectangle is 162 inches. The length is 35 inches longer than the width. Find the length and width of the rectangle. - The sum 31
The sum of two fractions is 13 3/4. Their difference is 8 1/5. What are fractions? - What number
What number must be added to both the numerator and denominator of 3/5 to get 5/6? - The sum 30 The sum of 8 times a number and 5 times another number is 184. The first number minus the second number is -3. What are the numbers?
- Percent down
$165.00 is what percentage less than $247.50?
- The volume 7
The volume of a cylindrical can is 75.36 in³. The diameter is 4 inches. Find the height. Use 3.14 as an estimation for pi. - Length and width
The length of a rectangle is 7 cm more than the width. Find the width and length if the perimeter of the rectangle is 78 cm. - The sides 7 The sides of the triangle are 5.2, 4.6, and x. If the PERIMETER of the triangle is 11.2 feet, what is the length of the unknown side? (hint: draw a picture)
- Coffee factory
In a factory, 10 kg of coffee is produced in a half day. The factory is in operation nonstop for 6 1/2 days a week. Find the total amount of coffee produced in a week. - The revenue
The revenue of Dr. Alban Bookstore increased from 1 500 000 pesos (in 2018) to 2 275 000 pesos (in 2019). What was the percent increase in the yearly revenue from 2018 to 2019?
75% of 40 is 30. What is the base?Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
