DCA #2 Review

Front

What is expanded form in mathematics?

Back

Expanded form is a way of writing numbers to show the value of each digit. For example, 23,636,025 in expanded form is 20,000,000 + 3,000,000 + 600,000 + 30,000 + 2,000 + 0 + 5.

Front

How do you find the total number of items when given two quantities?

Back

To find the total number of items, you can add the two quantities together. For example, if a shop makes 400 chocolate donuts and 125 more glazed donuts, the total is 400 + (400 + 125) = 925 donuts.

Front

What is an equation?

Back

An equation is a mathematical statement that shows that two expressions are equal. It often contains variables and constants.

Front

What does the term 'variable' mean in mathematics?

Back

A variable is a symbol, often a letter, that represents a number that can change or vary.

Front

What is the purpose of using equations in problem-solving?

Back

Equations help us to represent relationships between quantities and to find unknown values.

Front

What is the relationship between chocolate and glazed donuts in the given problem?

Back

The relationship is that the number of glazed donuts is 125 more than the number of chocolate donuts.

Front

How can you express a number in standard form?

Back

Standard form is writing a number using digits. For example, 23,636,025 is in standard form.

Front

What is the first step in solving a word problem?

Back

The first step is to read the problem carefully and identify what is being asked.

Front

What does 'total' mean in mathematics?

Back

Total refers to the sum or overall amount when two or more quantities are combined.

Front

How do you write an equation from a word problem?

Back

To write an equation from a word problem, identify the quantities involved and their relationships, then use symbols to represent them.