04/21 NBT

Front

What is standard form in mathematics?

Back

Standard form is a way of writing numbers using digits, where each digit has a place value. For example, 6,247 is in standard form.

Front

How do you round a number to the nearest ten?

Back

To round a number to the nearest ten, look at the digit in the ones place. If it is 5 or more, round up. If it is 4 or less, round down.

Front

What is the nearest ten to 77?

Back

80

Front

What is the nearest ten to 55?

Back

60

Front

What is the result of 87 - 9?

Back

78

Front

What is the result of 87 - 10 + 1?

Back

78

Front

What is the nearest ten to 42?

Back

40

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to the nearest specified place value, such as the nearest ten or hundred.

Front

What is place value?

Back

Place value is the value of a digit based on its position in a number. For example, in 6,247, the 2 is in the hundreds place, so its value is 200.

Front

What is the difference between standard form and expanded form?

Back

Standard form uses digits to represent a number, while expanded form breaks the number down into the sum of its place values. For example, 6,247 in expanded form is 6000 + 200 + 40 + 7.