Multiplication: What does it mean to use front-end estimation?

I think it means to multiply the first digits. For example: 310 times 240 = 3 times 4. Add a couple of zeros and you'll get 1200.

I need to diagram triangle, square,rhombus, rectangle, trapezoid and octagon in a venn diagram. Parallelograms and pane figures. I cannot understand which are plane figures. Help! thanks.

Writing to Explain: Which is greater, the greatest whole number with 5 digits or the least whole number w/ 6 digits?

I am so stupid, I cant even answer this question!

What does it mean to front-end estimation in subtraction?

Front-end estimation is a technique used in multiplication to quickly estimate the approximate product of two numbers. It involves only considering the digits in the front (or leftmost) place value of each number.

To use front-end estimation, follow these steps:

1. Identify the front (leftmost) digits of the two numbers you want to multiply.
2. Multiply these front digits. This will give you the estimated front-end product.
3. If there are more digits to the right of the front digits in either number, ignore them for now.
4. Look at the ignored digits and decide whether to round them up or down based on their value. For example, if the digits are 5 or greater, round up. If they are 4 or less, round down.
5. Add or subtract the rounded ignored digits to the estimated front-end product from step 2.
6. The result you get is the front-end estimation of the multiplication.

For example, let's say we want to estimate 43 x 72 using front-end estimation:

1. The front digits of 43 are 4, while the front digits of 72 are 7.
2. Multiply the front digits: 4 x 7 = 28. This is the estimated front-end product.
3. Ignore the digits to the right: 3 and 2.
4. Since 3 is less than 5 and 2 is less than 5, we round them both down to 0.
5. Add the rounded ignored digits: 28 + 0 + 0 = 28.
6. The front-end estimation of 43 x 72 is 28.

Front-end estimation provides a quick way to get a rough idea of the product of two numbers without performing the whole multiplication. It can be useful when you need a fast estimate for mental math or to quickly gauge the reasonableness of an answer.