Number Sense & Operations (NSO.1.1-1.5)

Front

What is number sense?

Back

Number sense is the ability to understand, relate, and connect numbers in a meaningful way.

Front

What does it mean to compare numbers?

Back

To compare numbers means to determine which number is greater, less than, or equal to another number.

Front

What is the expanded form of a number?

Back

The expanded form of a number shows the value of each digit. For example, 358 = 300 + 50 + 8.

Front

How do you round a number to the nearest thousand?

Back

To round to the nearest thousand, look at the hundreds digit. If it's 5 or more, round up; if it's less than 5, round down.

Front

What is the value of a digit in a number?

Back

The value of a digit is determined by its position in the number. For example, in 1,354, the 3 is in the tens place, so its value is 30.

Front

How do you order numbers from least to greatest?

Back

To order numbers from least to greatest, compare each number and arrange them starting from the smallest to the largest.

Front

What is a tenth?

Back

A tenth is one part of ten equal parts of a whole. In decimal form, it is represented as 0.1.

Front

What is a hundredth?

Back

A hundredth is one part of one hundred equal parts of a whole. In decimal form, it is represented as 0.01.

Front

How do you find the difference in value between two digits in different places?

Back

To find the difference in value, subtract the smaller place value from the larger place value. For example, the 3 in 1,354 is worth 30, and the 3 in 4,537 is worth 3.

Front

What is the place value of 5 in the number 358?

Back

The place value of 5 in 358 is 50, as it is in the tens place.