Arithmetic - examples
The truck passed 4550 km in 5 days. The first three days passed every day the same way. The fourth day passed 630 km and the fifth day was 920 km. How many km has passed the first three days?
- Pins 2
how many different possible 4 digits pins can be found on the 10-digit keypad?
- Cuboid edges in ratio
Cuboid edges lengths are in ratio 2:4:6. Calculate their lengths if you know that the cuboid volume is 24576 cm3.
From the rest of the cloth tailor could cut off either 3 m in men's suits without vest or 3.6 m with vest. What shortest possible length could the rest of the cloth have? How many suits a) without a vest b) with vest could make the tailor from the re
- April (month)
April has 30 days. Roman saves his money in the box for the whole month. Every third day you saves 10 cents. How many cents did Roman saved during the whole month when start saving on April 1?
- Product of two fractions
Product of two fractions is 9 3/5 . If one of the fraction is 9 3/7. Find the other fraction.
Vili ate three pieces of pie . If it piece is 1/8 how much pie did he eat?
Elena cut out same circle-shaped pagans and put them on a rectangular sheet so that the neighboring pagans were touching each other and the pagans were touching the walls of the sheet on the edges. Each pagans occupied 28.26 cm2 of the bottom of the sheet.
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?
- Stones in aquarium
In an aquarium with a length 2 m; width 1.5 m and a depth of 2.5 m is a water level up to three-quarters of the depth. Can we place stones with a volume of 2 m3 into the aquarium without water being poured out?
Is the number 109433 divisible by 7?
Charlie bought 7 same chocolates for 14 Eur. How many euros he pay for 27 chocolates?
- One half
One half of ? is: ?
The parents had 2 daughters. Each of them had one brother. How many members family had?
One brick is 2 kg and half a brick heavy. What is the weight of one brick?
5 trees in 3 lines grows in the orchard. How many trees are in the orchard?
I have 12 balls and my friend has 18. About how many has my friend more balls?
A cyclist passes 88 km in 4 hours. How many kilometers he pass in 8 hours?
Compare fractions ?. Which fraction of the lower?
- Is right?
Is triangle with sides 24, 51 and 45 right triangle?