Adding and Subtracting Whole Numbers Test

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was. For example, rounding 12,690 to the nearest thousand gives 13,000.

Front

What is the sum of 246 and 553?

Back

799

Front

What does the digit 5 represent in the number 3,654,982?

Back

50,000 (it is in the ten thousands place).

Front

How do you find the total attendance from two days?

Back

Add the number of attendees from both days. For example, 33,466 (Saturday) + 27,599 (Sunday) = 61,065.

Front

What is the result of subtracting 257 from 804?

Back

547

Front

What is the place value of a digit in a number?

Back

The place value of a digit is the value it holds based on its position in the number. For example, in 5,678, the place value of 5 is 5,000.

Front

How do you round a number to the nearest hundred?

Back

Look at the tens digit. If it is 5 or more, round up; if it is less than 5, round down.

Front

What is the difference between addition and subtraction?

Back

Addition combines numbers to find a total, while subtraction finds the difference between numbers.

Front

What is the value of 7 in the number 7,123,456?

Back

7,000,000 (it is in the millions place).

Front

How do you check your addition?

Back

You can check your addition by performing the inverse operation, which is subtraction. If the sum minus one of the addends equals the other addend, your addition is correct.