Multiply a 3- digit number by a 1- digit number
1/in a package of pencils , 8 are yellow and 4 are blue . How many yellow pencils are in 426 packages?
The answer:
4+8=12
12*426= 5,112
2/ A single pencil can draw a line equal to the length of 616 football fields! If you wanted to draw a line equal to the length of about 3,000 football fields, would you need 3,4, or 5 pencils? Explain.
3/ The school store has 3,000 pencils. They want tostock an eraser for each pencil . The eraser come in bags of 250 . The store ordered 9 bags. Will they have an eraser for each pencil? Explin
No , explain,,
250*9= 2250
Please ,, help me to solve the problem 1,2,3
#1 - forget about the blue pencils. There are 8 yellows in each package. So, in 426 packages, there are 8*426=3408.
Note that the title of the problem set was "Multiply a 3- digit number by a 1- digit number". That should have been a clue that your approach was wrong.
#2 - multiply and check:
3*616 = 1848
4*616 = 2464
5*616 = 3080
So, which is closest to 3000?
#3
So, whatcha think? Are 2250 erasers enough for 3000 pencils?
1. Why did you multiply by 4? You only need to find the total of yellow pencils.
2. 3000 / 616 = ?
3. Right.
Sure! I can help you solve these problems.
1/ In order to multiply a 3-digit number by a 1-digit number, you need to follow these steps:
- Write down the 3-digit number and the 1-digit number one below the other.
- Start by multiplying the digit in the one's place of the 1-digit number by each digit in the 3-digit number, one at a time. Write down the results below.
- Move one place to the left in the 1-digit number and repeat the multiplication process with each digit in the 3-digit number.
- Finally, add up all the results to get the final product.
For example:
To find out how many yellow pencils are in 426 packages, you start by multiplying 8 (the ones place digit of the 1-digit number) with each digit in 426:
8 x 6 = 48
8 x 2 = 16
8 x 4 = 32
Then, you add up these results:
48 + 16 + 32 = 96
So there are 96 yellow pencils in 426 packages.
2/ To find out how many pencils you would need to draw a line equal to the length of about 3,000 football fields, you need to use the given information that a single pencil can draw a line equal to the length of 616 football fields.
To solve this problem, you can divide the desired length (3,000 football fields) by the length that a single pencil can draw (616 football fields):
3,000 / 616 ≈ 4.87
Since you can't have a fraction of a pencil, you would need to round up to the nearest whole number. In this case, you would need 5 pencils to draw a line equal to the length of about 3,000 football fields.
3/ To determine if the school store will have enough erasers for each pencil, you need to calculate the total number of erasers and compare it to the number of pencils.
The store has 3,000 pencils. To find out how many erasers are needed, you multiply the number of pencils by the number of erasers per bag:
3,000 pencils * 1 eraser per pencil = 3,000 erasers needed
The erasers come in bags of 250. To find out how many bags are needed, you divide the total number of erasers needed by the number of erasers per bag:
3,000 erasers needed / 250 erasers per bag = 12 bags needed
So the store ordered 9 bags, which is not enough to have an eraser for each pencil. They would need 12 bags in total.