Math practice for 13 year olds - page 165 of 433
Number of problems found: 8660
- Pilgrimage 41951
Pavel spent CZK 315 on the pilgrimage in three days, doubling his spending every following day. How much CZK did he pay on the first day? - Governments 41931
Father put €600 in a bank that pays government interest at a rate of 3%p. A. Grandfather put €610 in a bank that will make governments at a rate of 2%p. A. Which will have more money if they withdraw from the bank after one year? - ABC isosceles
ABC isosceles rights triangle the length of each leg is 1 unit what is the length of the hypotenuse AB in the exact form - Efficiency 41901
What percentage is the loss of a machine that works with an efficiency of 0.78? - Performance 41891
The car's engine develops a power of 1800N. Find its performance if it travels evenly on a horizontal path at 48 km/h. - Five-digit number
Anna thinks of a five-digit number not divisible by three or four. If he increments each digit by one, it gets a five-digit number divisible by three. If he reduces each digit by one, he gets a five-digit number divisible by four. If it swaps any two digi - Gravitational 41861
Find the potential gravitational energy of a 2000kg tow cage relative to the bottom of an 850m deep draw pit when the cage is on the surface.
- G Force, mass The car, with a weight of 20 kN, travels at a speed of 54 km/h. What is its kinetic energy?
- Average 41841
What work do we do if we pull out a 58mm nail with an average force of 350N? - Happy marriage
Jan and Marienka have been in a happy marriage for several years. Jan's age is written in the same numbers as Marienka's, only in reverse order. Their ages differ by just a fifth of Marienka's. Jan is older. How old is Jan, and how many is Marienka? - Miguel
Miguel and Kat are reading the same book. Miguel reads the book three times as many pages as Kat. Together, they read 48 pages. Write an equation that we can use to find how many pages Kat read. - She showed the PC
Sabína wrote down how many hours a day she sat at the PC. Dana showed the situation with a radar graph. She was around 100% at the PC longer on weekends than on weekdays. Saturday-5 hours, Sunday-4 hours. And during the week it was: Monday 1 hour, Tuesday - Jordan
Jordan wants to bring in cookie cakes to share with his 23 classmates for his birthday. His mom is willing to buy up to six cookie cakes, and Jordan must share the cakes equally with his classmates (and himself). Answer the questions to help Jordan decide - Carla 2
Carla is renting a canoe. It costs $80 for 2 hours and $110 for 4 hours. What is the rate of change for this situation? - Which 3
Which is an equivalent ratio of 12:36
- Simultaneously 41451
Cities A and B are 36 km apart. A pedestrian leaves town A at a speed of 6 km/h to place B. A cyclist leaves town B simultaneously at a speed of 24 km/h to town A. In how many hours and at what distance will they meet? Write the result in minutes. - Roll of wallpaper
An art student uses a roll of wallpaper to decorate two gift boxes. The student will use 3 1/3 yards of paper for one box and 5/6 yards of paper for the other box. He must cut the paper into pieces that are 1/6 yard long. How many pieces will the student - Brass ball
What is the weight of a hollow brass ball, the outer diameter of which is 16 cm and the wall thickness is 2 cm, while the density of brass is ϱ = 8.5 g - Cindy run
Suppose it takes 1/3 of an hour for Cindy to run 3/5 of a mile. How many miles does she run in 1 hour? - Diameter 41221
How many shots with a diameter of 2 mm can a gunsmith cast from 1 kg of lead? The density of lead is 11.4 g / cm3
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