Maths practice for 11-year-olds. - page 167 of 222
Number of problems found: 4421
- Salad
We need two-tenths kg of a carrot, one-tenth of peas, and three-tenths tomatoes to make a salad. Express the fraction of the weight of the vegetables to be salad. Convert the result to grams. - The tank
The tank has 1320 liters of water and is shaped like a prism. Its base is a rectangle with sides a = 0.6 m and b = 1.5 m. How high is the water level in the tank? - Juice box
The juice box has a volume of 200 ml, and its base is an isosceles triangle with sides a = 4,5 cm and a height of 3.4 cm. How tall is the box? - LCM of two number
Find the smallest multiple of 63 and 147 - Stones in aquarium
In an aquarium with a length of 2 m, a width of 1.5 m, and a depth of 2.5 m is a water level up to three-quarters of the depth. Can we place stones with a volume of 2 m³ into the aquarium without water being poured out? - Reading pages
Tomáš and Lukáš read the same book. Tomas read 21 pages a day and read it one day earlier than Luke, who read 18 pages a day. How many pages did the book have? - Cycling distance
The cyclist went on a trip. At first, he walked for 4 hours at an average speed of 29 kilometers per hour, then he slowed down, and for the next 2 hours, he walked at a rate of only 20 kilometers per hour. How many kilometers did he cover in total? - LCD 2
The least common denominator of 2/5, 1/2, and 3/4 - Lawn mowing
A father and son mow the lawn in 3 hours. How much would a father do on his own if they both cut just as fast? - Calculate
Calculate the area of a circle whose radius is 5 dm. - Annulus
The radius of the larger circle is 8 cm, and the radius of the smaller is 5 cm. Calculate the area of the annulus. - Handmade baskets
The worker knits the baskets, which are then sold in the market. He made seven baskets on Monday, one more each day than the previous day. How many times more baskets did he make until the following Monday evening compared to the first day when he did not - Alarm clock
The old watchmaker has a unique digital alarm in its collection that rings whenever the sum of the alarm's digits equals 21. Find out when the alarm clock will ring. What is their number? List all options. - The surface
The cuboid's surface area is 1714 cm2, and the edges of the base are 25 cm and 14 cm long. Find the area of the surface. - Three elephants
Three elephants eat three piles of hay in 150 minutes. For how long do 96 elephants eat 96 stacks of hay? - Time adding
Add and write the result again as hours, minutes, and seconds: 2hours45min15s + 1hr20m50s = - Rings - intersect
There are 15 pupils in the sporting ring. Ten pupils go to football, and eight pupils go to floorball. How many pupils go to both rings at the same time? - Study
For 7 hours of study, she scored a 75, so if she made 93, how many hours would she need to study? - Surface area Calculate the surface area of a four-sided 2-m high prism whose base is a rectangle with sides of 17 cm and 1.3 dm.
- Magic belt
The magic rectangular belt has the property that whenever its owner wants something, the length of the belt is reduced to 1/2 and the width to 1/3. After three such wishes, the belt had an area of 4 cm². What was its original length if the original width
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