4th grade + multiplication - examples
Kangaroo do 10 jumps in 1 minute and then three minutes lie , then will make 10 jumps in 1 minute and 3 minutes lie, and so on. Find the shortest time in which kangaroo do 30 jumps.
- Concrete pedestal
The carpenters made wooden mold on a concrete pedestal in the shape of a cube with edge 2 meter long. What is the area in which the concrete touches wooden molds? (No lid or bottom)
One brick is 2 kg and half a brick heavy. What is the weight of one brick?
Calculate how many hours take holidays, if take 1 weeks.
55 weeks is equal to how many days?
After check of textbooks found that every 8-th textbook should be withdrawn. Together 74 textbooks were withdrawn. How many textbooks were in stock before withdrawn and how many after withdrawn?
- School trip
School trip cost 340.8 USD for one class (24 students). How much would cost a trip for two classes? (both classes together have 44 students)
Michail likes rolls, which cost 12 cents. Previously purchased 7 rolls. How many cents paid Michail for rolls?
You want to cut long board into smaller pieces. Carpenter said that one cut of the board into two pieces will cost you 90 cents. But you need to cut the board into 7 parts. How much you pay?
A line of print on a computer contains 80 characters (letters, spacers or other chars). Find how many characters there are in 20 lines.
- Boys and girls
In the class are 15 boys and 3-times less girls. How many girls are in the classroom? How many all children are in the class?
Cyclist goes on a trip. First, drove 3 hours average speed 42 kilometers per hour, then slowed down and another 2 hours driving a speed 39 kilometers per hour. How many total kilometers cycling?
- Efficiency of rail
With subsidies are business easy. Calculate how much must cost rail ticket (x) in today's ticket price € 13 and if the trains was not subsidized, if it is known that without subsidies would cost three times today's ticket prices. Calculate the value of.
- Unknown number 2
I think the number. When he reduces it four times, I'll get 14. What number am I thinking?
Grower harvested 190 kg of apples. Pears harvested 10 times less. a) How many kg pears harvested? b) How many apples and pears harvested? c) How many kg harvested pears less than apples?
Which number is 17 times larger than the number 6?
- Bus driver
The bus driver rides 191 km in the morning, afternoon rides 22 km more. How many kilometers traveled in 5 days if he rides on the same line?
Dad has two years more than mom. Mom has 5 times more than Katy. Katy has 2 times less than Jan. Jan is 10 years old. How old is everyone in the family? How old are all together?
Kate paid for the package on delivery of four meters textile 688 CZK. What is the price of one meter textile when shipping and handling amounted to 48 CZK?
By how many is the difference of numbers 8 and 34 less than its product?