Decimal Operations Rules Review

Front

What happens to the decimal in the dividend when you move the decimal in the divisor?

Back

The decimal moves the same amount in the dividend that it moved in the divisor.

Front

Which of the following does NOT have the same quotient as 6.4 ÷ 0.08? 0.64 ÷ 0.008, 64 ÷ 0.8, 640 ÷ 8,000, 64,000 ÷ 8,000

Back

64,000 ÷ 8,000

Front

How do you determine where to place the decimal in your answer after multiplying decimals?

Back

Count how many numbers are behind all decimals in the problem.

Front

What is the first step when multiplying decimals?

Back

Line up the numbers.

Front

If there is a decimal in the divisor, what must be done first?

Back

The divisor must be made a whole.

Front

What is the rule for moving decimals in division?

Back

Move the decimal in the divisor to the right, and move the decimal in the dividend the same number of places.

Front

How do you multiply decimals?

Back

Multiply as if they are whole numbers, then place the decimal based on the total number of decimal places in the factors.

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form, where the denominator is a power of ten.

Front

What does it mean to line up decimals in addition or subtraction?

Back

It means to ensure that the decimal points are aligned vertically before performing the operation.

Front

What is the significance of zero in decimal operations?

Back

Zero acts as a placeholder and can affect the value of the number when decimals are involved.