Multiplication - examples - page 9
Adult step has a length 71 cm. How many steps will he goes distance 80 meters? How many meters he goes when he makes 1000 steps?
Peter broke the window glass with size 110 cm and 90 cm. 1 square meter of glass costs 8 Euro. How much money is need to pay for a new glass?
- Unknown number
Samuel wrote unknown number. Then he had add 200000 to the number and the result multiply by three. When it calculated he was surprised, because the result would have received anyway, if write digit to the end of original number. Find unknown number.
- Drunk and alcohol
One drunk measured 2.7 ‰ alcohol in the blood, another 1.75 ‰. How many grams of alcohol in the blood they had if they has 6 kg of blood?
How many different committees of 2 people can be formed from a class of 29 students?
- Iron fence
One field of iron fence consists of 20 iron rods with square cross-section of 1.5 cm side and a long 1 meter. How much weight a field if the density of iron is 7800 kg/m3.
The sum and the product of three integers is 6. Write largest of them.
- Decimal expansion
Calculate: 5 . 100 + 0 . 1 + 0 . 100000 + 5 . 10 + 8 . 1000 + 8 . 10000 =
Divide by the number 1.1 is the same as multiply by what number?
Michail likes rolls, which cost 12 cents. Previously purchased 7 rolls. How many cents paid Michail for rolls?
- Word problem
384 students were on holiday in Hungary. 146 bought pizza, chips 25 pupils, 39 pupils bought soda, butter 15 pupils, 18 pupils fruits, vegetables 29 students. How much pay for all the food, if every meal cost 4.9 euros?
How many three-digit natural numbers is greater than 321 if no digit in number repeated?
Average of 5 numbers is 135. What is its sum?
The man conducting the census asks a woman to age of three daughters. Woman says when multiply the age getnumber 72; if their ages add up, get a number of our house, as you see. The man says: That is not enough to calculate their ages. She says: my oldes
Result of the product of the numbers 5, 1, 7, 2, 6, 1, 0, 6, 6, 5, 1, 9, 6 is:
- The wall
We have to build a cuboid wall with dimensions base 30 cm and 45 cm and height 3.25 meters. Calculate how many we need bricks if we spend 400 pieces of bricks to 1 m3 of wall?
- Sum of series
Determine the 6-th member and the sum of a geometric series: 4+4/3+4/9+4/27+4/81+4/243+....
Both dimensions of the rectangular parcel were increased by 40%. By how many % has increased its acreage?
Triangle whose sides are midpoints of sides of triangle ABC has a perimeter 84. How long is perimeter of triangle ABC?
Imagine that the saw blade with diameter 35 cm has one tooth colored with a different color. How long is path describing by the tip of the tooth after 7 minutes, if the blade is rotated 4704 times?