Unit 2: Place Value

Question 1

superscript

Answer 1

A symbol (such as a number or letter) written above and immediately to the left or right of another character.

Question 2

place value

Answer 2

The value of where a digit is located in a number. For example, in 457, the 4 is in the hundreds place, 5 is in the tens place, and 7 is in the ones place.

Question 3

compose numbers

Answer 3

Make a whole from parts.

Question 4

decompose numbers

Answer 4

Break down a whole into parts.

Question 5

front-end estimation

Answer 5

Only rounding the numbers in the place furthest to the left (greatest place value).

Question 6

estimation

Answer 6

Approximating a value for a calculation.

Question 7

operations

Answer 7

A mathematical calculation or process. The most common are addition, subtraction, multiplication, and division

Question 8

base

Answer 8

The number multiplied by itself when paired with an exponent.

Question 9

standard form

Answer 9

Routine way of writing a number.

Question 10

base-10 numeral

Answer 10

System of 10 digits (0 through 9) and their place values. It also includes decimal points (when applicable).

Question 11

rounding

Answer 11

A method of estimating in order to make working with a number easier.

Question 12

expanded form

Answer 12

Number written as the sum of each digit multiplied by the numerical equivalency of its place value.

Question 13

exponent

Answer 13

Sometimes called a power, it is a number that shows how many times the base is multiplied by itself

Question 14

multiplication

Answer 14

An operation performed on two numbers that results in a product. Often denoted by the dot sign, ·.