Counting by ones and tens

Front

What is counting by ones?

Back

Counting by ones means adding one unit at a time to a number, such as 1, 2, 3, 4, etc.

Front

What is counting by tens?

Back

Counting by tens means adding ten units at a time to a number, such as 10, 20, 30, 40, etc.

Front

What is the result of 45 + 10?

Back

The result of 45 + 10 is 55.

Front

What is the result of 39 + 1?

Back

The result of 39 + 1 is 40.

Front

What is the result of 10 + 10?

Back

The result of 10 + 10 is 20.

Front

What is the result of 37 + 10?

Back

The result of 37 + 10 is 47.

Front

What is the result of 100 + 10?

Back

The result of 100 + 10 is 110.

Front

How do you add two numbers together?

Back

To add two numbers, combine their values to find the total.

Front

What is the principle of addition?

Back

The principle of addition states that when you combine two or more numbers, the total is the sum of those numbers.

Front

What is a number line?

Back

A number line is a visual representation of numbers in a straight line, where each point corresponds to a number.