## Glossary

**algorithm**

**angle in a shape**

**area**

The number of square units that cover a flat figure without gaps or overlaps.

**array**

An arrangement of objects in rows and columns. Each column must contain the same number of objects as the other columns, and each row must have the same number of objects as the other rows.

**bar graph**

**denominator**

**division**

**divisor**

**equation**

A statement that includes an equal sign (=). It tells us that what is on one side of the sign is equal to what is on the other side.

**equivalent fractions**

**expanded form**

A specific way of writing a number as a sum of hundreds, tens, and ones.

Expanded form writes a number as a sum of the value of each digit. Example: 482 written in expanded form is \(400 + 80 + 2\) .

**expression**

An expression has at least 2 numbers and at least one math operation (such as addition, subtraction, multiplication and division).

**factor**

**fraction**

**gram**

A weight unit that is part of the metric measurement system.

There are 1,000 grams in a kilogram.

**key**

**kilogram**

A weight unit that is part of the metric measurement system.

There are 1,000 grams in a kilogram.

**liquid volume**

**liter**

**mixed number**

**multiplication**

**numerator**

The top part of a fraction that tells how many of the equal parts are being described.

**parentheses**

**perimeter**

**picture graph**

**product**

**quotient**

**right angle in a shape**

**rounding**

A formal way to say which number a given number is closer to. For example, for 182, the number 180 is the closest multiple of ten and 200 is the closest multiple of a hundred. We can round 182 to 180 (if rounding to the nearest ten) or 200 (if rounding to the nearest hundred).

**scaled bar graph**

**scaled picture graph**

**square centimeter**

A square with side lengths of 1 centimeter.

**square foot**

A square with side lengths of 1 foot.

**square inch**

**square meter**

**unit fraction**

**weight**