answersLogoWhite

0

Compatible number is one that is near the actual number, but is easier to use for addition, subtraction, multiplication, or division. In other words, it is easy to use for estimating the answer to an arithmetic problem.

Example:

38 + 23

A compatible number for 38 might be 40

A compatible number for 23 might be 20 (or 25)

The sum of the compatible numbers would be 60 (or 65). So you know the answer will be near there.

If you choose 40 and 20, you know that one of your compatible numbers is a little too high, and the other is a little too low. So your estimate of the answer (40+20=60) will be pretty close. (Your estimators are high by 2 and low by 3, so you know your answer is low by 1. It is really 61, not 60.)

If you choose 40 and 25, you know that both of your compatible numbers are a little too high, so your answer will be a little more high. As it turns out, both "estimates" are high by 2, so the estimated answer (65) is high by 2+2=4. The actual result is 61 = 65-4

User Avatar

Wiki User

10y ago

What else can I help you with?

Related Questions

What does the word compatible mean in math?

it means that it can be added or subtracted or multiplied or divided with another number to get another specific number


Numbers close to the numbers in the problem that can allow you to do math mentally?

compatible number


What is the compatible number of 358?

A compatible number for 358 is a number that is easy to work with for estimation or mental math. One common compatible number for 358 is 360, as it rounds up to the nearest ten and is close to the original number. Another option is 350, which rounds down, making it easier to calculate in various mathematical operations.


What does compatible numbers mean in math terms?

compatible numbers mean , for example, 56 x 8. if you wanna find compatible numbers to make the problem easier, then see what 56 is close to. its close to 70, so 70 x 8 would be 560.


What does tally mean in math?

It means a number of


What does volume mean in terms of math?

A number? ^^


What do variable mean in math?

a missing number


What does cube a number mean in math?

x4


What does media mean in math?

the number in the middle


In math what does dividend mean?

the number thats divided by another number


What does produt mean in math?

When you multiply a number x a number, the product is what you get. :-)


What is acompatible number?

Is the question suppose to be "a compatible number"? If it is then it's a number that is close to a number in a math problem. So it makes it easier to estimate if you have to use mental math. For example : to solve 40/4.7 --> you round 4.7 to 5 --> then divide 40/5 = 8