Operations on Decimal Numbers

Front

What is the result of adding 55.78 and 4.6?

Back

60.38

Front

What is the sum of 21 and 4.09?

Back

25.09

Front

How do you determine the number of decimal places in the product of two decimal numbers?

Back

Count the total number of digits to the right of the decimal points in both numbers.

Front

If Micah had $10.52 after buying a book for $6.39, how do you calculate how much he had before?

Back

Add the cost of the book to the amount he had after: $10.52 + $6.39 = $16.91.

Front

What is the result of subtracting 3.47 from 7.9?

Back

4.43

Front

What is the rule for adding decimal numbers?

Back

Align the decimal points and add as you would whole numbers.

Front

What is the rule for subtracting decimal numbers?

Back

Align the decimal points and subtract as you would whole numbers.

Front

How do you multiply decimal numbers?

Back

Multiply as if they are whole numbers, then count the total number of decimal places in both factors to place the decimal in the product.

Front

What is the result of 0.15 multiplied by 0.6?

Back

0.09 (3 decimal places in total).

Front

What is the importance of aligning decimal points in addition and subtraction?

Back

It ensures that each digit is in the correct place value, leading to accurate calculations.