5th Grade Decimal Review

Front

What is a decimal?

Back

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

Front

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

Back

To determine the number of decimal places in the product, count the total number of decimal places in both factors and that total will be the number of decimal places in the product.

Front

What is the process to subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point, subtract as you would with whole numbers, and place the decimal point in the answer directly below the decimal points of the numbers being subtracted.

Front

How do you calculate the cost of one item when given the total cost and quantity?

Back

To find the cost of one item, divide the total cost by the number of items.

Front

What is the formula to calculate total earnings based on hourly wage and hours worked?

Back

Total earnings = Hourly wage x Hours worked.

Front

How do you handle money when performing decimal operations?

Back

When handling money, ensure to keep two decimal places for cents, and round appropriately when necessary.

Front

What is the significance of rounding in decimal operations?

Back

Rounding helps simplify numbers to make calculations easier and to express values in a more manageable form, especially in financial contexts.

Front

What is the difference between addition and subtraction of decimals?

Back

Addition of decimals involves combining values, while subtraction involves finding the difference between values, both requiring alignment of decimal points.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal as a fraction with the decimal number as the numerator and a power of ten as the denominator, then simplify if possible.

Front

What is the importance of understanding place value in decimals?

Back

Understanding place value in decimals is crucial for performing operations accurately, as it determines the value of each digit based on its position.