Numbers - practice problems - page 2 of 216
Number of problems found: 4318
- One Saturday
One Saturday evening there are 40 girls 25 boys 18 women and 17 men at a cinema. What fraction are girls?
- Which 5
Which mixed number is equivalent to 2.68? A:2 and 6 eighths B:2 and 68 tenths C:2 and 6 over 68
- Mixed to improper
Change the given mixed numbers to improper fraction: five-and-four-over-nine (5 4/9)
- Weight fraction
To prepare the brine, we need 1500 g of an aqueous salt solution with a weight fraction of 0.08. What salt weight and water volume do we need to prepare it?
- Mass fraction
Two teaspoons (24 g) of sugar are dissolved in a cup with 500 g of tea. Calculate the weight fraction of sugar in the tea.
- Evaluate 18
Evaluate the expression (-4-7i)-(-6-9i) and write the result in the form a+bi (Real + i* Imaginary).
- Lowest terms 2
The expression 4/12 can be expressed in its lowest term as 1/3. What is 3/15 expressed in its lowest term?
- Denominator 2
Denominator of a fraction is 5 and numerator is 7. Write the fraction .
- Fruit basket
If there are 7 apples and 5 oranges in the basket, then what fraction of oranges are there in the fruit basket?
- ReIm notation
Let z = 6 + 5i and w = 3 - i. Compute the following and express your answer in a + bi form. w + 3z
- A class IV.A
In a class there are 15 girls and 30 boys. What fraction of the class represents the boys?
There are two adults, two children, and four babies on a bus. What fraction of the people are babies?
- Children 9
There are 11 children in a room. 6 of the children are girls. What fraction of the children are girls?
- Animals on a farm
There are 7 cows 3 sheeps and 4 chickens on a field. What fraction of the animals are sheep?
Sometimes Grace has kittens. Each kitten has 1/3 as much cat food as a full-grown cat. How many kittens can Grace feed with the 1.47 pounds? Solve on paper. Then check your work. 1 full-grown cat need 0.25 pound of food.
- Chocolate to sweets
I have 30 basket sweets and 15 chocolate in a basket. If take 5 sweet out of the basket what is the ratio in simplest form of the chocolate to the numbers of sweet left in the basket?
- Sadie 2
Sadie picked up fallen apples from an apple tree in her yard. She picked up 14 green ones, 16 that were changing from green to red, and 18 that were red. What fraction in simplest form names the green apples?
- Candies 46631
Danka had 48 candies and offered her friends. Anka took a third, Betka a sixth, and Cilka an eighth of all sweets. How many candies did she take?
In a braking test, a vehicle that travels at 51 km/h stops in 5 s. What is its acceleration?
- In the cafeteria
There are 18 students in Jacob’s homeroom. Six students bring their lunch to school. The rest eat lunch in the cafeteria. In simplest form, what fraction of students eat lunch in the cafeteria?