1.
12.3 * 10
2.
12.3 divided by 10
Explanation
The given question asks for the result of dividing 12.3 by 10. When we divide 12.3 by 10, we move the decimal point one place to the left, resulting in 1.23. Therefore, the correct answer is 1.23.
3.
1,700 * 100
Explanation
The given question asks for the product of 1,700 multiplied by 100. To find the answer, we simply multiply 1,700 by 100, which gives us 170,000. Therefore, the correct answer is 170,000.
4.
1,700 divided by 100
Explanation
The given question asks for the result of dividing 1,700 by 100. When dividing a number by 100, we move the decimal point two places to the left. Therefore, 1,700 divided by 100 equals 17.
5.
1.26 divided by 1,000
Explanation
The given question asks for the result of dividing 1.26 by 1,000. To solve this, we move the decimal point three places to the left in the numerator (1.26) to get 0.00126. Therefore, the correct answer is 0.00126.
6.
1.26 * 1,000
Explanation
The given expression is a multiplication of 1.26 and 1,000. When we multiply 1.26 by 1,000, we move the decimal point three places to the right, resulting in the number 1,260. Therefore, the correct answer is 1,260. The additional number 1260 is incorrect and seems to be a duplication or repetition of the correct answer.
7.
12.456 * 100
Explanation
When multiplying a decimal number by 100, we move the decimal point two places to the right. In this case, the decimal number is 12.456. Moving the decimal point two places to the right gives us 1245.6, which is the first option. The second option, 1245.6, is the same number but without the comma. Therefore, both options are correct.
8.
12.456 divided by 100
Explanation
The given question asks to divide 12.456 by 100. To divide a number by 100, we move the decimal point two places to the left. Therefore, the correct answer is 0.12456 or .12456.
9.
34,321 divided by 1000
Explanation
To divide a number by 1000, we move the decimal point three places to the left. In this case, the decimal point is already after the last digit, so we can simply move it three places to the left to get the quotient. Therefore, 34,321 divided by 1000 is equal to 34.321.
10.
34,321 * by 1000
Explanation
The given expression is multiplying 34,321 by 1000. When you multiply a number by 1000, you move the decimal point three places to the right. In this case, there are no decimal places in 34,321, so you simply add three zeros to the end of the number. Therefore, the answer is 34,321,000.