Add $2.4\times 10^6$ and $7.4\times 10^5$, and write the sum in scientific notation.

Divide $5.7\times 10^{12}$ by $3\times 10^5$ and write the quotient in scientific notation.

One email has a size of $3.4\times 10^{-2}$ megabytes, and an inbox holds $5\times 10^3$ emails. What is the total size of the emails in the inbox, in scientific notation?

One dried chickpea has a mass of $3.5\times 10^{-1}$ grams, and a sack holds $6\times 10^4$ chickpeas. What is the total mass of the chickpeas in the sack, in scientific notation?

Subtract $3.7\times 10^8$ from $5.9\times 10^9$, and write the difference in scientific notation.

Add $1.3\times 10^9$ and $6.2\times 10^8$, and write the sum in scientific notation.

One coin has a mass of $4.4\times 10^{-3}$ kilograms, and a vault holds $5\times 10^5$ coins. What is the total mass of the coins in the vault, in scientific notation?

Subtract $1.9\times 10^{10}$ from $6.1\times 10^{11}$, and write the difference in scientific notation.

Multiply ($2\times 10^8$)($7\times 10^4$) and write the product in scientific notation.

Divide $1.2\times 10^8$ by $4\times 10^3$ and write the quotient in scientific notation.

Subtract $7.1\times 10^4$ from $8.7\times 10^5$, and write the difference in scientific notation.

Divide $9.8\times 10^{12}$ by $7\times 10^5$ and write the quotient in scientific notation.

Divide $7.5\times 10^7$ by $5\times 10^3$ and write the quotient in scientific notation.

Multiply ($2\times 10^7$)($5\times 10^3$) and write the product in scientific notation.

Divide $6.4\times 10^8$ by $2\times 10^5$ and write the quotient in scientific notation.

Subtract $2.4\times 10^8$ from $7.4\times 10^9$, and write the difference in scientific notation.

Multiply ($2\times 10^{-3}$)($4\times 10^5$) and write the product in scientific notation.

Divide $7.2\times 10^7$ by $2\times 10^4$ and write the quotient in scientific notation.

Multiply ($6\times 10^7$)($2\times 10^7$) and write the product in scientific notation.

Divide $6.4\times 10^{12}$ by $4\times 10^3$ and write the quotient in scientific notation.

Divide $6.8\times 10^8$ by $2\times 10^4$ and write the quotient in scientific notation.

A sack of rice has a mass of $1.5\times 10^4$ grams, and one grain of rice has a mass of $2.5\times 10^{-2}$ grams. How many grains are in the sack, in scientific notation?

Add $3.2\times 10^5$ and $4.1\times 10^4$, and write the sum in scientific notation.

Multiply ($3\times 10^9$)($5\times 10^7$) and write the product in scientific notation.

Multiply ($3\times 10^4$)($6\times 10^2$) and write the product in scientific notation.

Add $4.4\times 10^7$ and $4.3\times 10^6$, and write the sum in scientific notation.

One vitamin capsule holds $4.8\times 10^{-4}$ liters of oil, and a factory fills $5\times 10^3$ capsules. What is the total volume of oil in the capsules, in scientific notation?

Subtract $3.3\times 10^3$ from $5.2\times 10^4$, and write the difference in scientific notation.

Add $4.9\times 10^8$ and $1.4\times 10^7$, and write the sum in scientific notation.

Multiply ($2\times 10^4$)($6\times 10^4$) and write the product in scientific notation.

One red blood cell has a mass of $2.5\times 10^{-3}$ grams, and a sample holds $6\times 10^4$ cells. What is the total mass of the cells in the sample, in scientific notation?

One grain of rice has a mass of $7.5\times 10^{-4}$ grams, and a sack holds $2\times 10^6$ grains. What is the total mass of the grains in the sack, in scientific notation?

Multiply ($2\times 10^6$)($5\times 10^7$) and write the product in scientific notation.

Add $3.1\times 10^9$ and $5.2\times 10^8$, and write the sum in scientific notation.

Multiply ($3\times 10^7$)($6\times 10^5$) and write the product in scientific notation.

Multiply ($5\times 10^5$)($2\times 10^7$) and write the product in scientific notation.

Subtract $2.7\times 10^{10}$ from $4.1\times 10^{11}$, and write the difference in scientific notation.

One snowflake has a mass of $2.4\times 10^{-1}$ grams, and a drift holds $5\times 10^3$ snowflakes. What is the total mass of the snowflakes in the drift, in scientific notation?

Divide $6.3\times 10^7$ by $3\times 10^2$ and write the quotient in scientific notation.

Divide $9.6\times 10^{10}$ by $6\times 10^2$ and write the quotient in scientific notation.