# How do you find compatible numbers?

## How do you find compatible numbers?

Compatible numbers are pairs of numbers that are easy to add, subtract, multiply, or divide mentally. When using estimation to approximate a calculation, replace actual numbers with compatible numbers. The numbers 500 and 300 are compatible for addition, since the sum of 800 can be easily calculated mentally.

What is an example of a compatible number?

Some examples of compatible numbers when doing multiplication are 200 and 40, 1100 and 40, 25 and 4. 1100 and 40 are compatible because we can quickly do this multiplication by multiplying 11 and 4 to get 44 and add three zeros at the end to get 44000.

What is compatible numbers 3rd grade?

Compatible numbers are numbers that are easy to work with mentally, such as parts of 10. By third grade, students can also quickly answer 80 + 20 or 100 – 20 by recognizing compatible numbers.

### What is being compatible?

Definition of compatible (Entry 1 of 2) 1 : capable of existing together in harmony compatible theories compatible people. 2 : capable of cross-fertilizing freely or uniting vegetatively.

What is the compatible number for 99999 and why?

R D Sharma – Mathematics 9 the successor of 99999. so 99999 +1 = 100,000.

What do you mean by compatibility?

Compatibility is the capacity for two systems to work together without having to be altered to do so. Compatible software applications use the same data formats. For example, if word processor applications are compatible, the user should be able to open their document files in either product.

#### What mean compatible numbers?

In mathematics, compatible numbers are the numbers that are easy to add, subtract, multiply, or divide mentally. Compatible numbers are close in value to the actual numbers that make estimating the answer and computing problems easier.

Why does compatible mean?

capable of existing or living together in harmony: the most compatible married couple I know. able to exist together with something else: Prejudice is not compatible with true religion. consistent; congruent (often followed by with): His claims are not compatible with the facts.

What are compatible numbers used for in math?

These numbers are helpful for performing easy mental calculations and help in solving any math problem easier in our head by rounding each number to the nearest ten, twenty, fifty or hundred. Use this simple online Compatible Numbers Calculator to estimate the nearest compatible numbers for any integer values.

## What are the nearest compatible numbers of 20?

Estimate Nearest Compatible Numbers of 20. 20 is an integer which can be easily divisible by the nearest integers 4, 5, and 10 . Thus, its nearest compatible numbers would be (20, 4) (20, 5) (20, 10) which helps for easier arithmetic operations.

What two numbers are compatible with 72 and 78?

1. Compatible numbers for 72 and 78 are 70 and 80. Note that one number was decreased while the other was increased! 2. Compatible numbers for 288 and 415 are 300 and 400 Multiply 3 by 4 and add four zeros at the end to get 120000.

What two numbers are compatible with 232 and 11?

1. Compatible numbers for 232 and 11 are 240 and 12. Notice that both numbers were increased! 24 can be divided by 12 to get 2. Then, add a zero at the end to get 20 2. Compatible numbers for 3421 and 9 are 3200 and 8. 32 can be divided by 8 to get 4. Then add one zero at the end to get 400 3. Compatible numbers for 25889 and 52 are 25000 and 50