Question

What decimal would you add to 0.7 to make 1.0?

Answer 1

To find the decimal you need to add to 0.7 to make 1.0, you can subtract 0.7 from 1.0:

1.0 - 0.7 = 0.3

So, the decimal you would add to 0.7 to make 1.0 is 0.3.

Answer 2

The decimal that must be added to 0.7 to make the sum equal to 1.0 is 0.3.

Step-by-step explanation:

To find which decimal you need to add to 0.7 to make 1.0, you must understand how to make sums with decimals. You want the sum of 0.7 and the unknown decimal to equal 1.0.

When looking at the numbers, it's clear that 0.7 is 0.3 less than 1.0 because if you add 0.3 to 0.7, the result is 1.0. Therefore, the decimal that must be added to 0.7 to equal 1.0 is 0.3.

This concept is similar to when you are working with place values and adding decimals. Just as you might use a calculator to find the sum of two numbers, ensure that you line up the decimal points correctly before you add. In more complex problems, you might round your final answer to a specific decimal place, such as the hundredth place. Whenever you work with decimals and powers of ten, remember that the decimal point's position is critical for determining the value of the number.