Math practice for 13 year olds - page 280 of 413
Number of problems found: 8260
- Three-Day Hike Distances
Jonas and Victor went on a three-day hike starting Friday. On the first day, they covered a fifth of the total route. On Saturday, they covered three-quarters of the remaining distance, and had 20 km left for Sunday. What percentage of the total route did - Diagonal to area
Calculate the area of a rectangle in which the diagonal length is 10 cm. - Ratio of Two Numbers
Fifty percent of the number x equals sixty percent of the number y. What is the ratio of the numbers x and y? - Exercise creation
Three lecturers will create 75 tasks in two and a half days. In how many days will it take at least five lecturers to create enough exercises for the exercise book, which should contain 300 exercises? (we assume that all tutors are equally efficient and w - Painters
Six of the painters paint 90 m of the fence in five hours. For how long would the four painters paint a 45-meter fence? How many meters of the fence were painted by painters 5 for two hours? - 13 tickets
A short and long sightseeing tour is possible at the castle. A ticket for a short sightseeing circuit costs CZK 60, for a long touring circuit costs CZK 100. So far, 13 tickets have been sold for 1140 CZK. How much did you pay for tickets for a short tour - Girls
The children's competition was attended by 63 girls, which is 30% of all children's participants. How many children attended this competition? - Perimeter of a rectangle If the perimeter of a rectangle is 114 meters and the length is twice the width plus 6 meters, what are the length and width?
- Cuboid
The sum of the lengths of the three edges of the cuboid that originate from one vertex is 210 cm. The edge length ratio is 7:5:3. Calculate the length of the edges. - Playing
How long have we trained on the pitch when we know that the warm-up took 10 minutes, we trained passes for one-third of the time, and we played football half the time? - Test Score Percentage
The natural history test contained 21 questions. The teacher evaluated each question by two points. Milan wrote a test for 39 points. At what percentage was Milan successful? - Grammar School Admission
115 girls and 136 boys enrolled at a grammar school. 64 students were admitted. What percentage of all applicants were admitted? - Examples Solved Percentage Susan planned to recalculate 20 examples from the new collection during the holidays, but she only managed to calculate 13 of them. At what percentage did she fulfill her plan?
- Visiting Cities Order Ways
The tourist group wanted to visit the four Slovak cities: Bratislava, Banská Bystrica, Ružomberok, and Levice. They decided that Levice would be the third place they would visit. How many different ways could they organize their city visit program? - Percentage Two Hours Minutes How many minutes is 60% of two hours?
- Electricity Consumption Reduction
In two months, the Novák family consumed 624 kWh of electricity during the day and 3018 kWh at night. How much kWh of electricity will the Novák family consume now in two months at the daily rate, and how much at the night rate if they decide to reduce co - Cyclist time
A car traveling at 75 km/h will drive from place A to place B in 3/4 hours. How long does it take for a cyclist to get there at a speed of 25 km/h? - Sugar Consumption Reduction Ratio
The Novak family had an annual sugar consumption of 68.4 kg and decided to reduce it by 5:8 the following year. How much sugar can the Novak family consume in the next year? - Line segment
The 4 cm long line segment is enlarged in the ratio of 5/2. How many centimeters will the new line segment be long? - Electric energy
There are 875 identical light bulbs in the sports hall lighting for 2 hours. How long does the same amount of electricity consume 100 such bulbs?
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