Math practice for 13 year olds - page 31 of 435
Number of problems found: 8682
- A potato
A potato farmer incurred a total cost of $1600 and $2500 from producing 5 and 8 potato bags, respectively, in 2 separate weeks. Find the cost of x bags. - Heat energy
Energy is measured using the unit Joule (J). Temperature is measured using the unit degree Celsius °C). To increase the temperature of 1 liter of water by 1°C, 4200 J of heat energy is required. (a) Kelly wants to increase the temperature of 2 liters of w - Chuck
Chuck Stone has 8 7/8 cubic yards of concrete in a truck. How much concrete remains in the truck if he unloads 2 1/2 cubic yards at the first stop, 3 cubic yards at the second stop, and 1 3/4 cubic yards at the third stop? - Order tempteratures
At 9:00 PM, the temperature was –26 degrees Fahrenheit; at 10:00 PM, the temperature was –28 degrees Fahrenheit; and at 11:00 PM, the temperature was –14 degrees Fahrenheit. When was it warmest? - Two chords 2
The length of one of two chords of a circle is 12cm. If the chords are 6cm and 7cm, respectively, away from the center of the circle, calculate the length of the second chord. - Amy, Cindy
Amy, Cindy, and John shared a sum of money among themselves in the ratio of 5:8:11, respectively. If the money had been divided equally among themselves, Amy would have received an extra $18. (a) Would the amount of money that Cindy received change? Expla - A goat 2
As shown, a goat is tied at one corner of a rectangular shed by a 5-meter-long rope. The shed measures 3 m by 2 m and is surrounded by grassland. What is the area of the grassland in which the goat can graze? Give your answer to the nearest m².
- Jake desires Jake desires to purchase a house valued at 3000000. The bank approves his mortgage with a 12% deposit and 5% interest. What is the deposit?
- A fair dice
A fair six-sided dice are rolled. What is the probability that the first number rolled is greater than 1 and the second number rolled is odd? Type your answer as a fraction in the simplest form. - Division by fraction
If b divided by 1/12 = 15, what does b equal? - New drink
Create a new drink can that will double the volume of the original can used. The dimensions of the can: 6cm diameter and 10cm height. You are to double the volume with the least amount of additional aluminum needed for the new can. There are 3 options : O - Emu vs. Ostrich
The ostrich and the emu are the two largest birds. An emu is usually 1/2 the size of an ostrich. The sum of their heights is 150 inches. How tall is the average ostrich? - Petra 4
Petra had 20 meters of cloth. She made 3 dresses of the same size, and two meters were left. How many meters did each dress take? - Marcellus
Marcellus has two bottles of ketchup that are the same size. One bottle is 1/5 full, and the other bottle is 1/2 full. Can all the ketchup fit into one bottle without the ketchup overflowing? - Rose and
Rose and Bill share a 30-ounce bucket of clay. By the end of the week, Rose has used 1/10 of the bucket, and Bill has used 2/5 of the bucket of clay. How many ounces are left in the bucket?
- Rectangle 83
Rectangle land has a dimension of 8 km times 10 9/10 km. What is the area? Write your answer as a fraction or as a whole or mixed number. - Club meeting
In the Green club meeting, 1/3 are Grade 4, 1/5 are GRADE 5, and the rest are Grade 6, pupils. If the total attendance is 240 pupils, how many are GRADE 6? - Inheritances According to a will, the inheritance is to be divided among 2 sons and 1 daughter. The ratio of the amount given to the eldest son to the amount given to the daughter is 2:1 the ratio of the amount given to the youngest son to the amount given to the daug
- Dinesh 2
Dinesh left town L for town M at a constant speed and took 10 hours to complete the journey. At the same time, Saanvi left town M for town L, traveled at a constant speed, and took 6 hours to complete the journey. They both passed each other at a point 72 - Storage shed
Frank designed a net for a storage shed that he is going to construct out of metal. The design consists of a square base and four square sides, plus four triangular parts that make up the roof. A square base of 6 feet and four square sides, plus 4 feet of
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