Addition and Subtraction of Whole Numbers

Front

What is the result of subtracting a smaller whole number from a larger whole number?

Back

The result is a positive whole number.

Front

What is the result of subtracting a larger whole number from a smaller whole number?

Back

The result is a negative number.

Front

How do you perform subtraction with whole numbers?

Back

Align the numbers by place value and subtract each column starting from the right.

Front

What is the sum of two whole numbers?

Back

The sum is the total amount obtained by adding the two numbers together.

Front

What is the difference between two whole numbers?

Back

The difference is the result of subtracting one number from another.

Front

If Anna bought 3 hammers costing $18 and $28 each, how do you calculate her total bill?

Back

Multiply the number of hammers by their respective costs and add the totals: (1 x 18) + (2 x 28) = 18 + 56 = 74.

Front

What is the process to find the total number of items after an addition?

Back

Add the original number of items to the number of new items added.

Front

How do you check your subtraction answer?

Back

You can check your subtraction by adding the difference to the smaller number; it should equal the larger number.

Front

What is the importance of place value in addition and subtraction?

Back

Place value helps in aligning numbers correctly for accurate addition and subtraction.

Front

What is a common mistake when subtracting whole numbers?

Back

A common mistake is not aligning the numbers by their place values.