Write each number in standard form. 21. $$ \left(3 imes 10^{7} ight)+\left(8 imes 10^{4} ight) $$ 22. $$ \left(6 imes 10^{4} ight)+\left(5 imes 10^{2} ight)+\left(1 imes 10^{0} ight) $$ 23. $$ \left(5 imes 10^{8} ight)+\left(8 imes 10^{7} ight)+\left(7 imes 10^{5} ight)+\left(2 imes 10^{3} ight)+\left(4 imes 10^{0} ight) $$ 24. $$ \left(4 imes 10^{6} ight)+\left(7 imes 10^{4} ight)+\left(7 imes 10^{2} ight)+\left(3 imes 10^{1} ight) $$ 25. $$ \left(5 imes 10^{9} ight)+\left(9 imes 10^{6} ight)+\left(5 imes 10^{3} ight)+\left(9 imes 10^{2} ight)+\left(6 imes 10^{0} ight) $$

Question

Write each number in standard form. 21. $$ \left(3 	imes 10^{7}ight)+\left(8 	imes 10^{4}ight) $$ 22. $$ \left(6 	imes 10^{4}ight)+\left(5 	imes 10^{2}ight)+\left(1 	imes 10^{0}ight) $$ 23. $$ \left(5 	imes 10^{8}ight)+\left(8 	imes 10^{7}ight)+\left(7 	imes 10^{5}ight)+\left(2 	imes 10^{3}ight)+\left(4 	imes 10^{0}ight) $$ 24. $$ \left(4 	imes 10^{6}ight)+\left(7 	imes 10^{4}ight)+\left(7 	imes 10^{2}ight)+\left(3 	imes 10^{1}ight) $$ 25. $$ \left(5 	imes 10^{9}ight)+\left(9 	imes 10^{6}ight)+\left(5 	imes 10^{3}ight)+\left(9 	imes 10^{2}ight)+\left(6 	imes 10^{0}ight) $$

UpStudy AI · Accepted Answer

Sure! Here's each number written in standard decimal form:

**21.** $$ \left(3 \times 10^{7}\right) + \left(8 \times 10^{4}\right) $$

$$
3 \times 10^{7} = 30,000,000
$$
$$
8 \times 10^{4} = 80,000
$$
$$
30,000,000 + 80,000 = 30,080,000
$$

**Standard Form:** **30,080,000**

---

**22.** $$ \left(6 \times 10^{4}\right) + \left(5 \times 10^{2}\right) + \left(1 \times 10^{0}\right) $$

$$
6 \times 10^{4} = 60,000
$$
$$
5 \times 10^{2} = 500
$$
$$
1 \times 10^{0} = 1
$$
$$
60,000 + 500 + 1 = 60,501
$$

**Standard Form:** **60,501**

---

**23.** $$ \left(5 \times 10^{8}\right) + \left(8 \times 10^{7}\right) + \left(7 \times 10^{5}\right) + \left(2 \times 10^{3}\right) + \left(4 \times 10^{0}\right) $$

$$
5 \times 10^{8} = 500,000,000
$$
$$
8 \times 10^{7} = 80,000,000
$$
$$
7 \times 10^{5} = 700,000
$$
$$
2 \times 10^{3} = 2,000
$$
$$
4 \times 10^{0} = 4
$$
$$
500,000,000 + 80,000,000 + 700,000 + 2,000 + 4 = 580,702,004
$$

**Standard Form:** **580,702,004**

---

**24.** $$ \left(4 \times 10^{6}\right) + \left(7 \times 10^{4}\right) + \left(7 \times 10^{2}\right) + \left(3 \times 10^{1}\right) $$

$$
4 \times 10^{6} = 4,000,000
$$
$$
7 \times 10^{4} = 70,000
$$
$$
7 \times 10^{2} = 700
$$
$$
3 \times 10^{1} = 30
$$
$$
4,000,000 + 70,000 + 700 + 30 = 4,070,730
$$

**Standard Form:** **4,070,730**

---

**25.** $$ \left(5 \times 10^{9}\right) + \left(9 \times 10^{6}\right) + \left(5 \times 10^{3}\right) + \left(9 \times 10^{2}\right) + \left(6 \times 10^{0}\right) $$

$$
5 \times 10^{9} = 5,000,000,000
$$
$$
9 \times 10^{6} = 9,000,000
$$
$$
5 \times 10^{3} = 5,000
$$
$$
9 \times 10^{2} = 900
$$
$$
6 \times 10^{0} = 6
$$
$$
5,000,000,000 + 9,000,000 + 5,000 + 900 + 6 = 5,009,005,906
$$

**Standard Form:** **5,009,005,906**
**21.** 30,080,000 **22.** 60,501 **23.** 580,702,004 **24.** 4,070,730 **25.** 5,009,005,906

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