Multiplication - 9th grade (14y) - examples
- Scientific notation
Approximately 7.5x105 gallons of water flow over a waterfall each second. There are 8.6x104 seconds in 1 day. Select the approximate number of gallons of water that flow over the waterfall in 1 day.
Gross wage was 1430 USD including 23% bonus. How many USD were bonuses?
A man drinks a barrel of water for 32 days, woman for 54 days, for how many days they drink barrel together?
One meter of the textile were discounted by 2 USD. Now 9 m of textile cost as before 8 m. Calculate the old and new price of 1 m of the textile.
Calculate how many average minutes a year is the web server is unavailable, the availability is 99.99%.
The swimming pool is 10 m wide and 22 m long and 191 cm deep. How many hectoliters of water is in it, if the water is 9 cm below its upper edge.
From the crossing of two perpendicular roads started two cyclists (each at different road). One runs at average speed 24 km/h, the second at average speed 26 km/h. Determine the distance between them after 35 minutes cycling.
- No. of divisors
How many different divisors has number ??
- 7 heroes
5 heroes galloping on 5 horses behind. How many ways can sort them behind?
How many different flags can be made from colors purple, yellow, red, white, blue, green, orange so that each flag consisted of three different colors?
Determine the number of all positive integers less than 4183444 if each is divisible by 29, 7, 17. What is its sum?
In how many ways can 5 shuttle vans line up at the airport?
On the meadow grazing horses, cows and sheep, together less than 200. If cows were 45 times more, horses 60 times more and sheep 35 times more than there are now, their numbers would equall. How many horses, cows and sheep are on the meadow together?
How many steps you save if you go square estate for diagonal (crosswise), rather than circumvent on the two sides of its perimeter with 307 steps.
How many ways can 7 people sit on 2 numbered chairs (eg seat reservation on the train)?
- Above 100%
What is 115% of 175?
- Sand pile
Auto sprinkled with sand to approximately conical shape. Workers wanted to determine the volume (amount of sand) and therefore measure the circumference of the base and the length of both sides of the cone (over the top). What is the volume of the sand c
- Daily average
Calculate the average temperature during the day, when 13 hours was 22 °C and 11 hours was 17 °C.
How many ways can 8 guests sit down on 10 seats standing in a row?
- The cyclist
The cyclist went from village to town. First half of journey went at 20 km/h. The second half of the journey, which mostly fell, went at 39 km/h. All journey took 88 minutes. Calculate the distance from the village to the town.