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------------------------------------------------ Write the following numbers in standard form. Reminder: You may have to add a [tex]$0$[/tex] as a placeholder in some cases.

Ex. [tex]$7000 + 40 + 2 = 7042$[/tex]

a. [tex]$50000000 + 20000 + 700 + 1 = 50271701$[/tex]

b. [tex][tex]$60000 + 8000 + 400 + 50 + 9 = 68459$[/tex][/tex]

c. [tex]$400000 + 10000 + 60 + 8 = 410068$[/tex]

d. [tex]$3000000000 + 200000000 + 5000000 + 70 + 3 = 3205000073$[/tex]

Sure, let's break down each problem step-by-step to write the numbers in standard form.

### Part b:
Given: [tex]$60000 + 8000 + 400 + 50 + 9$[/tex]

1. Start by writing each component in its place:
[tex]\[
60000
\][/tex]
[tex]\[
+ \ 8000
\][/tex]
[tex]\[
+ \ 400
\][/tex]
[tex]\[
+ \ 50
\][/tex]
[tex]\[
+ \ 9
\][/tex]

2. Now add these components together:
[tex]\[
60000 + 8000 = 68000
\][/tex]
[tex]\[
68000 + 400 = 68400
\][/tex]
[tex]\[
68400 + 50 = 68450
\][/tex]
[tex]\[
68450 + 9 = 68459
\][/tex]

So, the standard form is [tex]$68459$[/tex].

### Part c:
Given: [tex]$400000 + 10000 + 60 + 8$[/tex]

1. Start by writing each component in its place:
[tex]\[
400000
\][/tex]
[tex]\[
+ \ 10000
\][/tex]
[tex]\[
+ \ 60
\][/tex]
[tex]\[
+ \ 8
\][/tex]

2. Now add these components together:
[tex]\[
400000 + 10000 = 410000
\][/tex]
[tex]\[
410000 + 60 = 410060
\][/tex]
[tex]\[
410060 + 8 = 410068
\][/tex]

So, the standard form is [tex]$410068$[/tex].

### Part d:
Given: [tex]$3000000000 + 200000000 + 5000000 + 70 + 3$[/tex]

1. Start by writing each component in its place:
[tex]\[
3000000000
\][/tex]
[tex]\[
+ \ 200000000
\][/tex]
[tex]\[
+ \ 5000000
\][/tex]
[tex]\[
+ \ 70
\][/tex]
[tex]\[
+ \ 3
\][/tex]

2. Now add these components together:
[tex]\[
3000000000 + 200000000 = 3200000000
\][/tex]
[tex]\[
3200000000 + 5000000 = 3205000000
\][/tex]
[tex]\[
3205000000 + 70 = 3205000070
\][/tex]
[tex]\[
3205000070 + 3 = 3205000073
\][/tex]

So, the standard form is [tex]$3205000073$[/tex].

### Summary:
- Part (b) standard form is [tex]$68459$[/tex].
- Part (c) standard form is [tex]$410068$[/tex].
- Part (d) standard form is [tex]$3205000073$[/tex].

These are the final answers in standard form.