Dana buys a large packet of crisps.
On the first day, she eats of the packet.
The second day, she eats of the packet.
On the third day, she eats of the packet.
How much of the packet does she eat over the three days?
Dana buys a large packet of crisps.
On the first day, she eats \( \frac{1}{2} \)of the packet.
The second day, she eats \( \frac{1}{3} \)of the packet.
On the third day, she eats \( \frac{1}{4} \)of the packet.
How much of the packet does she eat over the three days?
A mother spends \( \frac{1}{6} \) of an hour preparing a salad and \( \frac{2}{3} \) of an hour cooking french fries.
How much time does she spend preparing food (as a fraction of an hour)?
Marcos takes \( \frac{2}{7} \) of the money out of his piggy bank.
How much more does he need to take out so that only half remains?
Daniel buys a roll of paper, uses\( \frac{2}{5} \) of the paper to wrap a book and \( \frac{3}{4} \) to wrap a notebook.
How much of the paper roll does Daniel use?
Ned spends \( \frac{1}{8} \) of an hour doing his language homework and \( \frac{6}{8} \) of an hour doing his science homework.
How long does Ned spend doing his homework (as a fraction of an hour)?
Dana buys a large packet of crisps.
On the first day, she eats of the packet.
The second day, she eats of the packet.
On the third day, she eats of the packet.
How much of the packet does she eat over the three days?
To solve this problem, we need to add the fractions of the packet that Dana eats over the three days.
Let's outline our steps:
Step 1: Determine the least common denominator (LCD).
The denominators are 2, 3, and 4. The least common multiple (LCM) of these numbers is 12. Hence, the common denominator is 12.
Step 2: Convert each fraction:
-
-
-
Step 3: Add the fractions:
The amount Dana eats over the three days is of the packet.
This means that Dana ate more than a whole packet (since is more than 1).
Therefore, the solution to the problem is .
A mother spends of an hour preparing a salad and of an hour cooking french fries.
How much time does she spend preparing food (as a fraction of an hour)?
The mother spends time preparing both salad and french fries. We need to sum up these two times:
Given the times:
To add these fractions, we need a common denominator. The denominators are 6 and 3. The least common multiple of 6 and 3 is 6.
Convert to a fraction with a denominator of 6:
Now, add the fractions:
Therefore, the total time the mother spends preparing food is of an hour.
Marcos takes of the money out of his piggy bank.
How much more does he need to take out so that only half remains?
To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: Initially, Marcos takes out of his money. Therefore, the remaining money is:
Step 2: We want only half of the initial amount, or , to remain. Let be the additional fraction of money taken out.
Equation:
Step 3: Solve for . First, get a common denominator for the fractions on the right.
Find a common denominator (here, 14 works):
Subtracting from both sides gives us:
Hence, .
Therefore, the solution to the problem is that Marcos needs to take out an additional amount of of his money.
Daniel buys a roll of paper, uses of the paper to wrap a book and to wrap a notebook.
How much of the paper roll does Daniel use?
To solve this problem, we will add the fractions representing the amount of paper Daniel uses:
Therefore, the solution to the problem is .
Ned spends of an hour doing his language homework and of an hour doing his science homework.
How long does Ned spend doing his homework (as a fraction of an hour)?
To solve the problem of determining how long Ned spends doing his homework, we need to add the times he spent on language and science homework.
Given:
- Language homework: of an hour
- Science homework: of an hour
Since both times have the same denominator, adding them is straightforward:
Therefore, Ned spends of an hour doing his homework.
Sarah receives a school assignment.
In the first hour, she does \( \frac{2}{8} \) of the work, while in the second hour she completes \( \frac{1}{4} \) of the work.
How much of the assignment does Sarah do in total?
Sarah receives a school assignment.
In the first hour, she does of the work, while in the second hour she completes of the work.
How much of the assignment does Sarah do in total?
To solve this problem, we will add the fractions of the work Sarah completed in the first and second hours:
Therefore, Sarah completed of the assignment in total.