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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.

Example: [tex]7000 + 40 + 2 = 7042[/tex]

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

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

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

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

Sure, let's write the numbers in standard form by combining the given values step-by-step:

### a. 50000000 + 20000 + 700 + 1
1. Start with [tex]$50000000$[/tex].
2. Add [tex]$20000$[/tex] which gives [tex]$50020000$[/tex].
3. Add [tex]$700$[/tex] which gives [tex]$50020700$[/tex].
4. Finally, add [tex]$1$[/tex] which results in [tex]$50020701$[/tex].

So, [tex]$50000000 + 20000 + 700 + 1$[/tex] in standard form is [tex]$50020701$[/tex].

### b. 60000 + 8000 + 400 + 50 + 9
1. Start with [tex]$60000$[/tex].
2. Add [tex]$8000$[/tex] which gives [tex]$68000$[/tex].
3. Add [tex]$400$[/tex] which gives [tex]$68400$[/tex].
4. Add [tex]$50$[/tex] which gives [tex]$68450$[/tex].
5. Finally, add [tex]$9$[/tex] which results in [tex]$68459$[/tex].

So, [tex]$60000 + 8000 + 400 + 50 + 9$[/tex] in standard form is [tex]$68459$[/tex].

### c. 400000 + 10000 + 60 + 8
1. Start with [tex]$400000$[/tex].
2. Add [tex]$10000$[/tex] which gives [tex]$410000$[/tex].
3. Add [tex]$60$[/tex] which gives [tex]$410060$[/tex].
4. Finally, add [tex]$8$[/tex] which results in [tex]$410068$[/tex].

So, [tex]$400000 + 10000 + 60 + 8$[/tex] in standard form is [tex]$410068$[/tex].

### d. 3000000000 + 200000000 + 5000000 + 70 + 3
1. Start with [tex]$3000000000$[/tex].
2. Add [tex]$200000000$[/tex] which gives [tex]$3200000000$[/tex].
3. Add [tex]$5000000$[/tex] which gives [tex]$3205000000$[/tex].
4. Add [tex]$70$[/tex] which gives [tex]$3205000070$[/tex].
5. Finally, add [tex]$3$[/tex] which results in [tex]$3205000073$[/tex].

So, [tex]$3000000000 + 200000000 + 5000000 + 70 + 3$[/tex] in standard form is [tex]$3205000073$[/tex].

### Summary
- [tex]$50000000 + 20000 + 700 + 1 = 50020701$[/tex]
- [tex]$60000 + 8000 + 400 + 50 + 9 = 68459$[/tex]
- [tex]$400000 + 10000 + 60 + 8 = 410068$[/tex]
- [tex]$3000000000 + 200000000 + 5000000 + 70 + 3 = 3205000073$[/tex]

I hope this explanation helps! Let me know if you have any other questions.