Unit 1

Front

What is expanded form?

Back

Expanded form is a way of writing numbers that shows the value of each digit. For example, 25,463 in expanded form is 20,000 + 5,000 + 400 + 60 + 3.

Front

How do you compare two numbers using symbols?

Back

You can compare two numbers using the symbols < (less than), > (greater than), and = (equal to). For example, 12,289 < 12,311 means 12,289 is less than 12,311.

Front

What is a number sentence?

Back

A number sentence is a mathematical statement that shows a relationship between numbers using operations like addition or subtraction. For example, 245 - 189 = _ is a number sentence.

Front

How do you find the difference between two numbers?

Back

To find the difference, you subtract the smaller number from the larger number. For example, to find how many more chocolate donuts there are than cinnamon donuts, you would do 245 - 189.

Front

What is word form?

Back

Word form is a way of writing numbers using words instead of digits. For example, 25,463 in word form is 'twenty five thousand four hundred sixty three'.

Front

What does the symbol < mean?

Back

The symbol < means 'less than'. It is used to compare two numbers where the first number is smaller.

Front

What does the symbol > mean?

Back

The symbol > means 'greater than'. It is used to compare two numbers where the first number is larger.

Front

What does the symbol = mean?

Back

The symbol = means 'equal to'. It shows that two numbers are the same.

Front

How can you represent a number in expanded form?

Back

To represent a number in expanded form, break it down into the value of each digit. For example, 25,463 = 20,000 + 5,000 + 400 + 60 + 3.

Front

What is the equation to find how many stickers are not emoji stickers?

Back

The equation is 127 + _ = 307, where you find the number of non-emoji stickers.