# Arithmetic - math word problems

1. GP - 8 items Determine the first eight members of a geometric progression if a9=512, q=2
2. Exponential equation Solve for x: (4^x):0,5=2/64.
3. Cremons The freight wagon is shaped like cuboid 21m and 3.5m and 4.2m How many cremons can be loaded if one is a cube with an edge length of 7 cm?
4. Doubling The message is spreading that each day has doubled the number of people who know about it. All know message for 20 days. How long known it eighth people?
5. Oceans The Earth's surface is approximately 510,000,000 km2 and is 7/10 covered by oceans. Of which 1/2 covers the Pacific Ocean, the Atlantic Ocean 1/4, the Indian Ocean 1/5 and the Arctic Ocean 1/20. What parts of the Earth's surface cover each ocean? How many products weighing 12.5 kg can be loaded on a cargo car with a load of 1.5 t to load two-thirds?
7. Z9–I–4 MO 2017 Numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 were prepared for a train journey with three wagons. They wanted to sit out so that three numbers were seated in each carriage and the largest of each of the three was equal to the sum of the remaining two. The conducto
8. Tree trunk From the tree trunk, the diameter at the narrower end is 28 cm, a beam of square cross-section is to be made. Calculate the longest side of the largest possible square cross-section.
9. Package The package was 23 meters of textile. The first day sold 12.3 meters. How many meters of textile remained in the package?
10. Identity 123456789 = 100 Use only three plus or minus characters to correct previous identity/equation.
11. Three numbers How much we increases the sum of three numbers when the first enlarge by 14, second by 15 and third by 16? Choose any three two-digit numbers and prove results.
12. Blackberries Damián gathered for 19 days 9.5 kg of blackberries. Milada gathered for two days 1.6 kg of currants. How much would collect Damián blackberries per day and how much currants Miladka per day?
13. Tank diameter A cylindrical tank has a volume of 60 hectoliters and is 2.5 meters deep. Calculate the tank diameter.
14. Zucchini One zucchini costs 5 CZK. How much would cost four?
15. Ten fractions Write ten fractions between 1/3 and 2/3
16. Unknown number 16 My number's tens is three times more then ones My number's ones is twice the number of thousands and my number's hundreds is half the number of of tens. I have two ones. which number am I?
17. Dividends The three friends divided the win by the invested money. Karlos got three eighths John 320 permille and the rest got Martin. Who got the most and which the least?
18. Chocolate Children break chocolate first to third and then every part of another half. What kind got each child? Draw a picture. What part would have received if each piece have halved? The surface of the sphere is 60 cm square. Calculate its radius; result round to tenth of cm. There are 10 seals on floe. a) On Wednesday arrived a six and departed 2 seals. How many seals are on the floe? b) on Thursday arrived a 5 seals more then departed. How many seals are on the floe?