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say you estimate5.21 x 78.03 you can estimate by the whole number so the 5 stays the same and 78 turns to 80 so it should look like this 5x 80=400 ,so 5.21 x 78.03 =400. SO what i did was use the compatible numbers 5 and 80

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15y ago
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8mo ago

Compatible numbers are used to simplify calculations by choosing numbers that are easy to work with. You would use compatible numbers to estimate the value of an expression when you want a quick approximation without needing to calculate the exact answer. It's especially helpful when dealing with numbers that are close to each other or when you need to perform mental math quickly.

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12y ago

It is most useful for finding quotients because it works with multiples.

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Q: When would you use compatible numbers to estimate the value of an expression?
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Related questions

How does one estimate a quotient using compatible numbers?

The best way to estimate a quotient using compatible numbers is to first understand how compatible numbers work. They are numbers that are close in value to the actual numbers and are easily added, subtracted or divided.


The of an expression is the result when the variables in an algebraic expression are replaced by numbers and the expression is simplified?

Value


What is the compatible number of 77?

Compatible numbers are numbers that are close in value to the actual numbers and easy to add, subtract, multiply, or divide mentally.So a logical compatible number for 77 would be 80.


Is the value in your expression resricted to a particular set of numbers?

No.


Finding the value of an algebraic expression by replacing variables with numbers called what?

Evaluating the expression


What is the value of the expression 4.23?

The value of the expression 4.23 is simply 4.23 itself. In mathematics, an expression typically consists of numbers, symbols, and operators, but in this case, the expression is already a numerical value. Therefore, the value of the expression 4.23 is 4.23.


Create an expression that has the value of 15 but you must use parentheses in at least three numbers in your expression?

stooped


What is the value of the expression 73?

The value of the expression 73 is simply 73. In mathematics, an expression is a combination of numbers, symbols, and operators that represents a mathematical statement. In this case, the expression is just the number 73 itself, so its value remains 73.


What is a compatible fraction?

Ah, a compatible fraction is like a good friend that gets along well with others. When you have compatible fractions, they have the same denominator, making it easier to add or subtract them. It's like painting a beautiful landscape with colors that blend harmoniously together. Just remember, when fractions are compatible, working with them becomes a joyful experience.


Create an expression that has the value of 15 but you must use parentheses in at least three numbers and in expression?

(5×3)÷2


Examples of using place value or compatible numbers to break apart the dividend?

(800+2+6)


What does the value of an expression mean?

If you replace variables in an expression by numbers (in case there are any variables) and then do the indicated operations, you get a number. That final number is the "value" of the expression.