Well, one way to use **reasonableness** is to **estimate** the answer to see if your answer is an outrageous answer or not. So, looking at your problem, you see that you are multiplying a two hundred something number by 4 and then subtracting 10 from it.

**What is the rule for estimating?** The general rule for estimating is to look at the digit to the right of the digit you want to estimate. Estimating or rounding to the nearest whole number means looking at the digit to the right of the decimal. If you see a digit greater than 5, round up, and if it's less than 5, round down.

## what is a reasonable estimate in math?

**Reasonable estimate**. A

**reasonable estimate**does not exceed the original

**numbers**from a problem.

**What does reasonable mean in law?** reasonable. adj., adv. in law, just, rational, appropriate, ordinary or usual in the circumstances. It may refer to care, cause, compensation, doubt (in a criminal trial), and a host of other actions or activities.

## what is a check in math?

**Check** numbers are one digit numbers from 0 to 8. We will designate the **check** numbers by using parenthesis. Let's start with a simple two-digit number: 17. Add the digits together: 1 + 7 = 8. **Check** number of 17 is (8).

**How do you estimate a multiplication problem?** To estimate the result of multiplication (product), round the numbers to some close numbers that you can easily multiply mentally. One method of estimation is to round all factors to the biggest digit (place value) they have.

## how does estimating help check the reasonableness of your answer?

**Answer** Expert Verified The correct **answer** is: Make **your estimate** first. Once **you** have completed **your** exact calculations, compare **your answer** to **your estimate**. If **your answer** is close to **your estimate**, then **your answer** can be considered **reasonable**.

**How do you estimate the product of two decimals?** Summary: When multiplying decimals, we use the following procedure: Estimate the product. Multiply to find the product. Multiply the decimals as if they were whole numbers. Ignore the decimal point. Compare your estimate with your product to verify that your answer makes sense.

### What is a reasonableness check?

**reasonableness check**. **reasonableness check**: A **test** to determine whether a value conforms to specified criteria. Note: A **reasonableness check** can be used to eliminate questionable data points from subsequent processing. Synonym wild-point detection.

**What is the procedure for multiplying by a one digit number?** Multiplying 1-Digit Number. We know the process of multiplying 1-digit number by another 1-digit number. The multiplication of one-digit numbers is done with the help of the multiplication table of the number concerned. Suppose, if we have to multiply 7 by 5, we put the numbers in column form.

### How can an estimated sum or difference be useful?

The key with estimation is to only use it in instances that don't require an exact answer. The first step in estimating a sum or a difference is to round the numbers, by changing them to the nearest power of ten, hundred, thousand, etc. Round the numbers first, then use mental math to estimate an answer.

### What are the properties of addition?

Properties of Addition. There are four mathematical properties which involve addition. The properties are the commutative, associative, additive identity and distributive properties. Additive Identity Property: The sum of any number and zero is the original number.

### What is an example of an estimate?

To find a value that is close enough to the right answer, usually with some thought or calculation involved. Example: Alex estimated there were 10,000 sunflowers in the field by counting one row then multiplying by the number of rows.

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