Decimals and Standard form

Question 1

Multiplying in standard form?

Answer 1

multiply the decimals and add the powers of 10; adjust 10 if needed to make standard form.

Question 2

Dividing in standard form?

Answer 2

Divide the decimals and subtract the powers of 10; adjust the decimals and power of ten if needed to make standard form.

Question 3

Multiplying decimals?

Answer 3

Multiply as if they were whole, then place the decimal point so that the product has the same number of digits after it as the factors.

Question 4

Dividing decimals?

Answer 4

Move the decimal point in the deviser, then divide to make the deviser a whole number; then you can divide as if they were whole numbers, and place the decimal point above where it is in the dividend.