Math practice for 13 year olds - page 99 of 413
Number of problems found: 8253
- Peter 11
Peter is answering to ten word math problems. It takes him 1 ⅓ hour to answer five and 1 ½ hours to answer 5. On average, how many minutes does it take him to answer a problem? - Cuboid's diagonal
The cuboid has a body diagonal u=25 cm, and side b is one-third longer than side a. What is the volume of the cuboid? - The point
The point which lies in the fourth quadrant is A.(2,1) B.(1,-3) C.( -5,-2) D. (-4,0) E. (0,0) - The midpoint 2
Find the value of x if M is the midpoint of PQ, PQ=10x−7, and PM=14. - Nicolette
Nicolette makes a small bead bracelet using five red, eight purple, and six green beads. A large necklace has the same ratio of beads as a small bracelet. If the large necklace requires 15 red beads, how many purple beads are needed to make a large bracel - A town 2
A town has raised 3/8 of the 12,000 and needs to furnish its new library. How much more money is it hoping to raise? - A solution
A solution of salt and water has 15% salt by weight. From it, 30 kg evaporated, and the solution now contains 20% salt. Find the original quantity of the solution. - Year salary
2/5 of a man's salary is 40,000. What is his salary? - Fencing
Ruby is purchasing fencing to go around a rectangular lot which is 4x + 9 feet long and 3x - 5 feet wide. Which expression represents the amount of fencing she must buy? - Two drops
Between 5:00 pm to 6:00 pm, the temperature dropped 3 °C. Between 6:00 pm to 7:00 pm, the temperature dropped 4 °C. What was the total drop in temperature from 5:00 pm to 7:00 pm? - Expression with powers
Which expression is equivalent to 2.1 raised to the fifth power divided by 0.9 raised to the fourth power, all raised to the third power? - Marbles 4
Sipho has a cylindrical tank with a radius of 8 cm and a height of 10 cm. The bottom of the tank is filled with marbles, and the tank is then filled with water to a height of 6,4 cm. When the marbles are removed, the water level drops to 4 cm. Using the i - Full of water
A man removed 2/7 of a tank full of water. If it now contains 450 liters, how many liters does it hold when full? - I spent
I spent 3/8 of my money in one shop, 1/4 in a second shop, and 1/8 in a third shop. I then had $5 left. How much did I start with? - The length 14
The length of the rectangle is 6 cm, and the perimeter of the rectangle is 20 cm. Find the rectangle's breadth. Find the area of the rectangle. - The length 13
The length of a rectangular garden is 3 5/11. The width is 1/4 of the length. What is the area of the garden as a mixed number? - Mrs. Sojka
Mrs. Sojka gave her class 12 minutes to read. Natalie read 7 1/2 pages in the time. At what rate in pages per hour did Natalie read? - Cows and pigs
There are 3/4 as many cows as pigs on an animal farm. If there are 35 pigs and cows on the farm, how many of them are pigs? - A man 8
A man has 72 sheep. He wants to divide the sheep among his four children in the ratio of 5:3:2:2. How many sheep will each child get? - Erica’s
Erica's bank account increased from $1,200.00 to $1,500.00. By what percent did the amount of money in her bank account increase?
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