Topic 1 Understanding place value TEST REVIEW

Front

What is place value?

Back

Place value is the value of a digit based on its position within a number. For example, in the number 345, the digit 3 is in the hundreds place, so its value is 300.

Front

What are equivalent decimals?

Back

Equivalent decimals are decimal numbers that represent the same value. For example, 0.5 and 0.50 are equivalent decimals.

Front

What is the base in an exponential expression?

Back

In an exponential expression like 10^5, the base is the number that is being multiplied by itself, which is 10.

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 is rounding in mathematics?

Back

Rounding is the process of adjusting a number to a nearby value that is simpler or more convenient, often to a specified place value.

Front

What is the value of the digit 7 in the number 7.89?

Back

In the number 7.89, the digit 7 is in the units place, so its value is 7.

Front

How do you round 4.567 to the nearest hundredth?

Back

To round 4.567 to the nearest hundredth, look at the third decimal place (7). Since it is 5 or greater, round up, resulting in 4.57.

Front

What is the value of 3 in the number 3,456?

Back

In the number 3,456, the digit 3 is in the thousands place, so its value is 3,000.

Front

What is the purpose of a decimal point?

Back

A decimal point separates the whole number part from the fractional part in a decimal number.

Front

How do you express 2 + (5 x 1/10) + (3 x 1/100) as a decimal?

Back

The expression evaluates to 2.53.