Multiplication - 7th grade (12y) - examples
Compare fractions ?. Which fraction of the lower?
The root of the equation ? is: ?
How many different flags can be made from colors red, white, blue, black, yellow, green, purple, gray, orange so that each flag consisted of three different colors?
- Above 100%
What is 155% of 210?
In human body the blood is about 7.7% body weight. How many kilograms of blood is in the human body with weight 96 kg?
Calculate the 2.9 ‰ of 629.
Same type of medicament produces a number of manufacturers in a variety of packages with different content of active substance. Pack 1: includes 60 pills of 1200 mg of active substance per pack cost 18 Eur. Pack 2: includes 30 pills of 1000 mg of active s
A man drinks a barrel of water for 31 days, woman for 58 days, for how many days they drink barrel together?
In the camp are children. 1/4 went on a trip, 1/2 went to bathe and 99 children remained in the room. How many children are in camp?
- Coin and die
Flip a coin and then roll a six-sided die. How many possible combinations are there?
- Drunk man
Drunkman has 2.1‰ of alcohol in the blood. How many grams of alcohol has in blood, if he have 6 kg of blood?
What is the least common multiple of 28, 42, 22?
Write time in minutes rounded to one decimal place: 1 h 42 m 22 s.
How many times should be broken chocolate consisting of 7 × 10 pieces to get the 70 parts?
The theater has in each row with 11 seats. Ticket to the first 8 rows is for 198 KČ. In next rows is for 84 KČ. The theater was completely sold out. Revenue was 34980 KČ. How many rows are in the theater?
Ladies sweater was twice discounted. First by 17%, then by 17% of the new price. Its final price was 72 USD. Determine the original price of sweater.
Gross wage was 1113 USD including 16% bonus. How many USD were bonuses?
The swimming pool is 6 m wide and 14 m long and 185 cm deep. How many hectoliters of water is in it, if the water is 9 cm below its upper edge.
Average of 5 numbers is 135. What is its sum?
Calculate the area and perimeter of a parallelogram whose two sides are long a=10 cm b=22 cm and height ha = 4 cm long.