Maths practice for 8 year olds
Number of problems found: 77
- A two
A two year old car was sold for USD 30000, 50% less than the price when new, calculate the price of the car when new.
- A person
A person buys 10 kg of commodity A at a rate of 2 kg per dollar, 20 kg of commodity b at a rate of 5 kilograms per dollar, and 30 kg of commodity C at a rate of 10 kg per dollar. Find the average price kg per dollar.
- Divide line segment
Find the point P on line segment AB, such that |AP| = r |AB| . Coordinates of endpoints: A = (−2, 0, 1), B = (10, 8, 5), ratio r = 1/4.
- Equation: 72584
Find the solution of the equation: 2x: 8 = 3 ÷ 4, where x is an integer.
- The temperature 32
The temperature in a place in Antarctica at 12 o’clock is 5’celsius and every hour it drops 4 ‘ celsius express this relationship using one equation and represent it graphically
- Two alloys
Two alloys Y and Z are each made up of zinc, tin and copper. In alloy Y, the ratio of zinc to tin is 2:5 and the ratio of copper to tin is 4:3. Determine the ratio, copper: zinc: tin in alloy Y.
- Forgave 71504
Juro owed Mir 112 euros. Miro forgave him for 35. What debt did Jur have left?
- Shopping trips
Luke bought some fresh produce. He picked up 2 oranges and 3 bananas. The cost of Luke's shopping was $18. Georgia also went to the same shop and bought 5 oranges and 7 bananas. The cost of Georgia's shopping was $44. Write and solve a system of linear eq
- Number pattern
What are the next two numbers that occur in this pattern? 0.24, 0.48, 0.96, 1.92, ____, ____
- A machine 2
A machine shop ordered the following amounts of cold, rolled, steel: 1714 lb., 597 lb., and 1043 lb. How many pounds of steel were ordered?
- The MRT train
The MRT running from Taft to North Avenue has a starting velocity of 60km/hr. After a malfunction, the brakes failed, making the train run with a velocity of 80km/hr. What is the acceleration rate if the time for velocity change is 5 seconds?
- A cyclist
A cyclist rides for 30 minutes on a style road to the top of a mountain. Of down there, the road goes downhill. Its uphill speed is 20km/h and 60km/h downhill. The distance from the summit of the mountain to its destination is 30 km. Calculate the average
- The diameter 4
The diameter of cone is 14ft and the height is 7 ft. What is the slant height?
- Mimie
Mimie wants to put a lace around her square frame each side of the square measures 3 feet. What is the total length of the lace that she will use?
- Students
The 7th grade has 195 students. There are 25 more girls than boys in the grade. How many more boys are in the 7th grade?
- Wendy
Wendy deposits R6500 into an account paying 8% annual interest compounded monthly. How much money will be in her account after 84 months paying 8% annual interest compounded continuously?
- Bicycles 66224
Mr. Veselý sells bicycles. In one month, he sold 14 bikes for 4530 CZK. How many crowns did he earn per round?
- Triangle from sticks
Bob the boulder has many sticks of length 3,5 and 7 . He wants to form triangles each of whose edges consists of exactly 1 stick. How many non congruent can be form with the sticks.
- Four-digit 63154
In entry 85 * 0, replace the asterisk with a number to give the smallest possible four-digit number divisible by 4.
- The temperature 22
The temperature in a room in the morning is 28°C. It rises by 9°C in the afternoon before dropping by 11°C at night. What is the temperature in the room at the end of the day?
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