Number sense

Front

What is number sense?

Back

Number sense is the ability to understand, interpret, and work with numbers. It includes skills such as estimating, comparing, and performing calculations.

Front

How do you compare decimal numbers?

Back

To compare decimal numbers, align the decimal points and compare digit by digit from left to right.

Front

What are factors?

Back

Factors are numbers that can be multiplied together to get another number. For example, the factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24.

Front

What is an equivalent fraction?

Back

An equivalent fraction is a fraction that represents the same value as another fraction, even though the numerator and denominator are different.

Front

How do you round numbers to the nearest hundred?

Back

To round a number to the nearest hundred, look at the tens digit. If it is 5 or more, round up; if it is 4 or less, round down.

Front

What is the sum of the digits in a number?

Back

The sum of the digits in a number is the total obtained by adding each digit together. For example, in the number 462, the sum is 4 + 6 + 2 = 12.

Front

What is a mystery number problem?

Back

A mystery number problem provides clues to help identify a specific number based on given conditions.

Front

What does it mean for a number to be even?

Back

An even number is any integer that is divisible by 2 without a remainder. Examples include 0, 2, 4, 6, and 8.

Front

How do you find common factors of two numbers?

Back

To find common factors, list all the factors of each number and identify the factors that appear in both lists.

Front

What is rounding?

Back

Rounding is the process of adjusting the value of a number to make it simpler while keeping it close to the original value.