Arrays are commonly used in programming and mathematics to store and manipulate a collection of related data. In mathematics, arrays are often used to represent visual arrangements of objects, such as rows and columns of dots or shapes. In programming, arrays are used to store a collection of values of the same type, such as a list of numbers or strings.

To create an array, you can use the following syntax in most programming languages:

`var arrayName = [value1, value2, value3];`

Here, `arrayName`

is the name of the array, and `value1, value2, value3`

are the elements that will be stored in the array. The elements are separated by commas and enclosed in square brackets.

Each element in an array is assigned a unique index, starting from 0. You can access individual elements by using their index, like this:

`var firstElement = arrayName[0];`

This would retrieve the first element in the array `arrayName`

.

Arrays offer a variety of methods for manipulating the data they contain, such as adding or removing elements, sorting elements, and iterating over the elements. These methods are often provided by programming languages to make it easier to work with arrays.

- What is an array?
- How do you create an array in a programming language?
- How do you access elements within an array?
- What are some common methods for working with arrays?
- Give an example of a real-life scenario where arrays could be useful.

Study GuideMore Multiplication Activity LessonMultiplication Stars Worksheet/Answer key

More Multiplication Worksheet/Answer key

More Multiplication Worksheet/Answer key

More Multiplication

Number and Operations (NCTM)

Compute fluently and make reasonable estimates.

Develop fluency in adding, subtracting, multiplying, and dividing whole numbers.

Select appropriate methods and tools for computing with whole numbers from among mental computation, estimation, calculators, and paper and pencil according to the context and nature of the computation and use the selected method or tools.

Algebra (NCTM)

Use mathematical models to represent and understand quantitative relationships.

Model problem situations with objects and use representations such as graphs, tables, and equations to draw conclusions.

Grade 4 Curriculum Focal Points (NCTM)

Number and Operations and Algebra: Developing quick recall of multiplication facts and related division facts and fluency with whole number multiplication

Students use understandings of multiplication to develop quick recall of the basic multiplication facts and related division facts. They apply their understanding of models for multiplication (i.e., equal-sized groups, arrays, area models, equal intervals on the number line), place value, and properties of operations (in particular, the distributive property) as they develop, discuss, and use efficient, accurate, and generalizable methods to multiply multi-digit whole numbers. They select appropriate methods and apply them accurately to estimate products or calculate them mentally, depending on the context and numbers involved. They develop fluency with efficient procedures, including the standard algorithm, for multiplying whole numbers, understand why the procedures work (on the basis of place value and properties of operations), and use them to solve problems.