Solve the Decimal Equation: Finding the Missing Number in 0.2 + ? = 0.6

Question

Fill in the missing value (?):

$0.2+?=0.6$

00:00 Choose the correct answer

00:03 Let's mark each option and check

00:10 Let's use long division for calculation

00:15 Let's calculate and mark

00:33 We see that the first option doesn't fit, let's move to the second

00:39 Again let's use the same method and check

01:03 We see that the second option doesn't fit, let's move to the third:

01:12 Again let's use the same method and check

01:35 We see that the third option fits, let's move to the fourth:

01:43 Again let's use the same method and check

02:06 We see that the fourth option doesn't fit

02:16 And this is the solution to the question

To solve this problem, we will use basic subtraction:

Step 1: Restate the given equation: $0.2 + ? = 0.6$ .
Step 2: To find the missing number, subtract the known addend $0.2$ from the total $0.6$ .
Step 3: Perform the subtraction: $0.6 - 0.2 = 0.4$ .

After performing the calculation, we find that the missing value is $0.4$ . Therefore, the equation $0.2 + 0.4 = 0.6$ is correct.

Therefore, the solution to the problem is $0.4$ .

0.4