Topic 1: Review What you Know

_______ is the position of a digit in a number that tells the value of the digit.

• place value

• millions

• period

The numbers 0, 1, 2, 3, 4, and so on are called _______.

• expanded form

• place value

• whole numbers

A number using only words is written using a ___________.

• number name.

• rounding

• number line

Replacing a number with a number that tells about how many or how much is called _____.

• place value

• rounding

• expanded form.

_______ is the value give to the place of a digit in a number.

• Whole number

• Number line

• Place value

In a number, the period of the three places to the left of the thousands period is called the _________ period.

• less than symbol

• rounding

• millions

A number that is written as the sum of the values of its digits is written in ________.

• rounding

• place value

• expanded form

In a number, a _______ is a group of three digits separated by commas, starting from the right (each different color represents it).

• period

• place value

• conjecture

In a number sentence, a symbol that points toward the lesser number is called the __________ symbol.

• greater than

• less than

• equal

In a number sentence, a symbol that points away from a greater number is called the _________ symbol.

• greater than

• less than

• equal