Menu Math add/subtract decimals

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. For example, 2.5 is a decimal.

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the answer directly below the other decimal points.

Tags

CCSS.6.NS.B.3

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the answer directly below the other decimal points.

Tags

CCSS.5.NBT.B.7

Front

What is a subtotal?

Back

A subtotal is the total amount before any additional charges or discounts are applied.

Tags

CCSS.6.NS.B.3

Front

What is a total?

Back

A total is the final amount after all charges, discounts, and taxes have been added to the subtotal.

Tags

CCSS.7.EE.B.3

Front

If a customer pays $50 for an order costing $11.69, how do you find the change?

Back

Subtract the order cost from the amount paid: $50 - $11.69 = $38.31.

Tags

CCSS.5.NBT.B.7

Front

If a customer pays $100 for an order costing $13.50, how do you find the change?

Back

Subtract the order cost from the amount paid: $100 - $13.50 = $86.50.

Tags

CCSS.5.NBT.B.7

Front

What is the importance of rounding decimals in money transactions?

Back

Rounding decimals helps simplify calculations and ensures that the amounts are manageable and understandable, especially in financial transactions.

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 10 as the denominator, then simplify if possible.

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

Front

What is the value of 0.5 in cents?

Back

0.5 dollars is equal to 50 cents.

Tags

CCSS.6.RP.A.3D