Math practice for 13 year olds - page 293 of 424
Number of problems found: 8461
- Parking 5800
There are 56 red and blue cars in the parking lot. Red is seven times less than blue. How many blue cars are there? - Rectangular 5798
The pyramid has a rectangular base with dimensions a = 5cm, b = 6cm. The side edges are identical; their length is h = 11cm. Calculate the surface of the pyramid. - Brought 5796
Kamil and Kamila brought a total of 140 kg of paper. Kamila weighed 30 kilograms less than Kamil. How much Kamil brought, and how much was Kamila? - Tv screen
The length of its diagonal gives the size of a tv screen. If the dimension of a tv screen is 16 inches by 14 inches, what is the TV screen size? - How many
How many double-digit numbers greater than 30 can we create from digits 0, 1, 2, 3, 4, and 5? We cannot repeat numbers in a two-digit number. - Calculate 5789
Calculate the volume and surface of the rotating cone with the base radius r = 4.6dm and the height v = 230mm. - Increased 5787 The notebook cost 10.50 euros after an increase of 40%. How many euros would it cost if it increased by only 20%?
- Probability 5785
There are 1 to 20 start numbers in the draw. What is the probability that the first downhill raffle will draw a start number less than 6? - Arrowroot 5775
Ten grams of kiwi contains the same amount of vitamin C as 50 grams of oranges. One hundred grams of arrowroot contains the same amount of vitamin C as 200 grams of kiwi. How many grams of oranges contain the same amount of vitamin C as 50 grams of arrows - Calculate 5770
Calculate how long it will take the Šetrný family to repay the loan if, after the first year, they paid €1350 in interest and the loan's interest rate was 6% p.a. They will repay the loan to the bank for €3,000 each year, and the bank will only add intere - Tetrahedron
What is the angle of the sides from the base of a three-sided pyramid where the sides are identical? - Fifty-six 5763
Fifty-six pupils attend the eighth grade of primary school. There are 18 more boys than girls. How many boys and girls are in the eighth grade of primary school? - Delivered 5762
The poultry farm supplied 50,000 eggs per year. According to the plan, it was supposed to deliver 20% of the annual task in April and 16% in May. In April, it exceeded the monthly plan by 830 eggs; in May, it failed to deliver 260 eggs against the plan. W - Penultimate 5761
The boy was practicing shooting at the basket. Out of the first 12 attempts, he missed 9 times. He was successful in all other attempts except a single penultimate throw. He thus achieved exactly half the success rate (he hit the basket in half of the att - Dried fruit
The manufacturer produces a mixture of dried fruit. He purchased: 10kg pineapple for 200 Kc/kg 2kg papaya for 180 kc/kg 1kg of banana for 400 Kc/kg How many kgs of raisin for 80 Kc/kg must be put into the mix by the manufacturer so that the production pri - Socík
On the construction site of a new housing estate in Kladno-Kročehlavy, students from the state labor reserve carried out machine plastering of the masonry. 5 students plastered 10 square meters more masonry than 6 plasterers who plastered by hand. Togethe - Pupils 5753
The class has 24 pupils, with 40% fewer boys than girls. How many boys and girls are in the class? - Machine 5751
The washing machine became cheaper by 43.5 euros, which is 15% of the old price. What is the new price? - Result 5749
I think the number if I assign 8 (add) to it and divide the result by two, I get a number 46 less than the number, I guess. What number do I think? - Mixture
How many percentage mixtures do we get by adding 23ml of matter to 89ml of water?
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