Maths practice for 12-year-olds - page 264 of 307
Number of problems found: 6132
- Marched 2713
Pupils marched in 2 and 1/4 hours. What part of the march did they miss in an hour? - The cube
The surface of the cube is 150 square centimeters. Calculate: a- the area of its walls b - the length of its edges c - its volume - Tractors
Six tractors plowed the field for eight days. After two days, two tractors broke down. How many days were prolonged work in the field? - Information 2704
The table contains information on the number of pupils according to the number of siblings: Number of siblings 0 1 2 3 and more Number of pupils 50 50 72 28 What is the probability that a randomly selected student has exactly two siblings?
- Gcd and lcm
Calculate the greatest common divisor and the least common multiple of numbers. a) 16 and 18 b) 24 and 22 c) 45 and 60 d) 36 and 30 - Multiply 2700
I think the number. If I add five and multiply the result by 7, I get 245. Which is it? - Wallet
She spent a fifth on the first purchase from the money in her wallet. From the remaining money, she could buy 2 kg of strawberries. But she purchased only 1.5 kg for 60 Kc. How much money was Marie originally in her wallet? - Land area
The land area of Asia and Africa are in a 3:2 ratio, and the European and African are 1:3. What are the proportions of Asia, Africa, and Europe? - Mother and daughter
The ratio of mother and daughter years is 5:2. After seven years, the ratio is 2:1. How many years ago was the daughter born?
- Millionaire
Mr. Smith has withdrawn from the bank, saving interest € 1,500. How big was his initial deposit if the annual interest rate was 1.5%? - Math heart
A stylized heart shape is created from a square with a 5 cm long side and two semicircles over its sides. Calculate the area and its circumference. - Borrowed 2676
Erik borrowed 50 euros from his mother for four months at a rate of 5% p.a. (per year). How much does he have to return? - Percentage 2672
Igor paid only 12 euros for sneakers instead of 15 euros. What percentage did he pay less? What percentage of the original amount of sneakers has become cheaper? - Assistant
The Assistant rewrote 15% of the entire manuscript in 12 hours. How many hours must he still write to rewrite the rest of the manuscript?
- Unknown number
Find an unknown number of which 1/5 is 40 greater than one-tenth of that number. - Speed of sound
The average speed of sound is 330 meters per second. Estimate how long it will take to hear the church bell 1 km away. Calculate the distance from what you would hear sound after 10 seconds. - Money borrow
Ms. Kate wants to borrow € 2,000. Company A will borrow ten payments of 240 euros and will not pay anything in the first two months. Company B borrows in 12 payments of € 210. Which company has the more favorable interest rate for Ms. Kate? - Cinema 5
James wants to go to the movies every Tuesday for five years. After a year, he learned that the ticket price on Wednesday was only € 5.10 and € 5.60 the other day. Now that he knows about the discount, he decided to change his habits and go to the cinema - 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
Paul saves 155Kč in 46 2 Kc and 5Kc coins. How much saved 2Kc and 5Kc coins?Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
