Maths practice for 11-year-olds. - page 200 of 230
Number of problems found: 4584
- Gears
The gearing fits the wheel with 20 teeth to the wheel with 36 teeth. Before the machine is started, personnel mark the teeth of the smaller wheel and the opposite of the larger wheel. How many times after starting the machine wheels turning that painted t
- Division of money
Calculate how many euros Matthew, Miriam, Lucy, Michael, and Janka, when together, have 2,700 euros, and the amounts are at a ratio of 1:5:6:7:8.
- Floor
The rectangular floor of the living room has a length of 5.4 meters and a circumference of 17.2 meters. What is its width?
- Cows
Twenty cows have food for 60 days. We reduce the dose to two-thirds for 18 cows. How many days will it feed?
- Number
I think the number. If I add to its third seven, I get the same as when to its quarter add 8. What is the number?
- Two cars 2
Two cars started from two positions 87 km distant at the same time in opposite directions at speeds of 81 km/h and 75 km/h. What was the distance between them after 2 hours and 50 minutes of driving?
- Car - road
The car started at 11:40, traveling 54 km/h between A and B, and arrived at 12:20. Find the distance between A and B.
- Classmate 2613
Juro didn't have a watch, so he asked a classmate for the exact time. Simon looked at the clock and said: "If my watch were 22 minutes late, it would be 11:54. But it's not that much because my watch doesn't miss; it goes 22 minutes ahead". What time was
- Bricks II
3/4 bricks weigh 6 kg and 2/3 bricks. How weighs one whole brick?
- Candies 2597
Two bars and one candy cost 24 CZK. Two candies and one bar cost CZK 27. How much does candy cost?
- Performances 2596
There were shows in the city cinema over the weekend. On Saturday, 12 students from our class participated in the performance, and on Sunday, 8 students participated. Fifteen pupils attended the performances. How many pupils attended both performances?
- Overall 2594
Viktor lost 45 beans at the party. In the second game, he won 36 beans. How did Viktor turn out overall?
- Containers 2593
The 3.2 m high container weighs 4.2 tons. The 30 m long ships weigh as much as 30 containers. What weight does the boat have?
- Heart as pump
The heart pumps out 5.17 liters of blood in 1 minute. How many liters of blood are pumped per hour, and how much per day?
- Pins
Sarah bought nine pins, and Eva bought four pins and saved 2 euros. How many pins did Dana buy when she had 3 euros?
- The father
The father is 36 years old, and the son is six years old. Thus, a father will be three times older than a son by how many years?
- Significant 2584
The metal chain has a length of 92m. With each repair, 4m will be lost. What is the most significant number of repairs they will do if the chain is not shorter than 56m?
- Trees
3/5 trees are apples, and cherries are 1/3. Five trees are pears. How many is the total number of trees?
- Calculate 2566
Calculate the area of a regular hexagon with side a = 2cm
- Unknown number 24
I think the number: a - is the same as the square area with the 12th circumference. What is this number? b - its half is seven times bigger than its quarter. Is this the number?
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