4.4A Add & Subtract Whole Numbers and Decimals - Boulder Retest

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Front

What is subtraction?

Back

Subtraction is the process of finding the difference between two numbers by taking one number away from another.

Front

How do you add whole numbers?

Back

To add whole numbers, align the numbers by place value and add each column starting from the right.

Front

How do you subtract whole numbers?

Back

To subtract whole numbers, align the numbers by place value and subtract each column starting from the right.

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form, where the denominator is a power of ten, represented with a decimal point.

Front

How do you add decimals?

Back

To add decimals, align the decimal points and add as you would whole numbers, carrying over if necessary.

Front

How do you subtract decimals?

Back

To subtract decimals, align the decimal points and subtract as you would whole numbers, borrowing if necessary.

Front

What is the total attendance of four games if Game 4 had 85,236 attendees and the total was 319,562?

Back

The total attendance of the other three games is 319,562 - 85,236 = 234,326.

Front

What is the total cost of two textbooks at $62.75 each and a laptop at $145.33?

Back

Total cost = (2 x $62.75) + $145.33 = $270.83.

Front

If a gym coach buys 5 footballs at $15 each and a soccer ball at $8.27, what is the total cost?

Back

Total cost = (5 x $15) + $8.27 = $83.27.