Maths practice for 12-year-olds - page 67 of 349

Number of problems found: 6962

Permitted 80726
The highway section is 25 km long, and the maximum permitted speed is 110 km/h. The driver covered this section in 12 minutes. Did he exceed the speed limit?
Cube-shaped 80720
Pavel has a cube-shaped aquarium with a volume of 240 liters. Thomas has an aquarium whose all dimensions are half the dimensions of Paul's aquarium. What is the volume of Thomas's aquarium?
Current in the bulb
The bulb is rated 6 V, 0.2 A. Determine the current rating of the bulb.
Rectangle 80701
One side of the rectangle has length a=9/5 cm, and the length of side b is 7/10 cm greater than the length of side a. Calculate the perimeter and area of the rectangle.
Application 80696
A worker makes 12 furs in 12 hours. One truck has 20 m³. The price for the application is 2.45 euros/m³. What will be the hourly output in euros?
Follows 80693
A train travels at a speed of 50 km/h from city A. In 15 minutes, a second train follows him at 20 m/s. We are sitting on the first train. When will the second train catch up with the first?
Classroom 80652
The classroom is 11 m long, 6.5 m wide, and 4 m high. I will pay 14.50 for 1 m² of painting. How much will it cost to paint the classroom?
Unknown 80642
If we add 6000 to half of the unknown number, we get 9000. What is the unknown number?
Quotient 80640
The quotient of two numbers is 22. The divisor is 154. What is the divisor?
Grandchildren 80639
The average age of the grandfather, grandmother, and their five grandchildren is 26 years. The average age of the grandchildren themselves is 7 years. Grandma is a year younger than grandpa. How old is grandma?
Calculate 80625
Half a kg of coffee costs CZK 124. Calculate how many crowns you will pay for 3/4 kg of this coffee.
Mansour
Mansour has 1/2 kilo of mangoes to divide equally into 8 different bags. What fraction of a kilo will be in each bag?
Hardware store
At the hardware store, 1/4 of the nails are size 2d, and 3/8 of the nails are size 4d. What fraction of the nails are either size 2d or 4d?
Sum of 25
The Sum of two rational numbers is -2/3. If one of the numbers is 4/5, find the other.
Sss triangle 2
Construct triangle ABC in which |AB|=5cm, |AC|=6cm and |BC|=9cm
Seamstress 80601
A seamstress needs 3/5 meters of ribbon to sew the veil. How much can she sew like this if she bought 24 meters of ribbon?
A three-pack
A three-pack of bar soap has a wholesale cost of $1.15. A pharmacy wants to sell this product with a markup of 60%. What are the amounts of the markup and the retail price of a pack of soap? A. markup: $0.69; retail price: $1.84 B. markup: $0.69; retail p
A fruit
A fruit grower uses 1/3 of his land for bananas, 3/8 for pineapples, 1/6 for mangoes, and the remainder for oranges. What fraction of his land is used for oranges?
If four
If four friends evenly split 6 1/2 pounds of candy, how many pounds of candy does each friend get?
The quotient 4
The quotient of two numbers is 15/16. If the dividend is 3/8, what is the divisor? A. 6/5 B. 4/5 C. 2/5 D. 1/5

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