Solve for the Missing Addend: 0.4 + ? = 0.9

Question

Fill in the missing value (?):

0.4+?=0.9 0.4+?=0.9

Video Solution

Solution Steps

00:00 Choose the correct answer
00:03 Let's write down each option and check
00:09 We'll use long multiplication for calculation
00:21 Let's calculate and write down
00:29 We see that the first option doesn't fit, let's move to the second
00:34 Again we'll use the same method and check
00:50 Let's calculate and write down
01:03 We see that the second option fits, let's move to the third
01:11 Again we'll use the same method and check
01:20 Let's calculate and write down
01:32 We see that the third option fits, let's move to the fourth:
01:41 Again we'll use the same method and check
01:52 Let's calculate and write down
02:06 We see that the fourth option doesn't fit
02:12 And this is the solution to the question

Step-by-Step Solution

To solve the problem of finding the missing value ?? in the equation 0.4+?=0.90.4 + ? = 0.9, we'll perform the following steps:

  • Step 1: Identify what is given and what is missing in the equation.
  • Step 2: Use subtraction to isolate the missing value.
  • Step 3: Execute the subtraction and find the missing value.

Now, let's proceed through these steps in detail:

Step 1: The equation given is 0.4+?=0.90.4 + ? = 0.9. Here, the goal is to identify the number, represented by ??, which when added to 0.40.4 equals 0.90.9.

Step 2: To find ??, we need to isolate it. We can do this by subtracting 0.40.4 from both sides of the equation:

?=0.9−0.4? = 0.9 - 0.4

Step 3: Calculate the result of the subtraction:

?=0.9−0.4=0.5? = 0.9 - 0.4 = 0.5

Therefore, the missing value ?? that satisfies the equation 0.4+?=0.90.4 + ? = 0.9 is 0.50.5.

Let's confirm this with the multiple choice provided: the correct answer is choice :

0.5

.

Answer

0.5

More Questions

Related Subjects

Addition and Subtraction of Decimal Numbers Decimal Fractions

Question Types

Addition and Subtraction of Decimal Fractions: Complete the missing numbers