Lesson 1-2 Vocabulary

A ten-digit number system in which the value of a digit depends on its place value, the value of each place is 10 times the value of the place to the right.

• Thousandths

• Base Ten

• Place value

One of the parts formed when a whole is divided into 1,000 equal parts.

• Thousandths

• Decimal

• Base Ten

A number containing a decimal point that separates a whole from fractional place values (tenths, hundredths, thousandths, and so on).

• Base Ten

• Place value

• Decimal

The value assigned to a digit based on its position in a number.

• Base ten

• Place value

• Decimal

The small, raised number in a power that tells how many times to use the base as a factor.

• Decimal

• Exponent

• Digit

A number that can be written as a product of tens

• Place value

• Base ten

• Power of ten

Operations that undo the effect of each other.

• Summative propertyu

• communitive property

• inverse operations