Adding, Subtracting, Multiplying, and Dividing Decimals

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 numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Tags

CCSS.5.NBT.B.7

Front

What is the process for subtracting decimals?

Back

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

Tags

CCSS.5.NBT.B.7

Front

How do you multiply decimals?

Back

To multiply decimals, multiply the numbers as if they were whole numbers, then count the total number of decimal places in both factors and place the decimal point in the product accordingly.

Tags

CCSS.6.NS.B.3

Front

What is the method for dividing decimals?

Back

To divide decimals, move the decimal point in the divisor to the right to make it a whole number, then move the decimal point in the dividend the same number of places and divide as usual.

Tags

CCSS.6.NS.B.3

Front

What is the product of 6.7545 and 2.3?

Back

The product is 15.53535.

Tags

CCSS.6.NS.B.3

Front

What is the quotient of 78.46 divided by 9.5?

Back

The quotient is 8.258.

Tags

CCSS.5.NBT.B.7

Front

What is the difference when subtracting 212.41 from 345.5?

Back

The difference is 133.09.

Tags

CCSS.5.NBT.B.7

Front

What is the sum of 251.1 and 14.356?

Back

The sum is 265.456.

Tags

CCSS.6.NS.B.3

Front

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

Back

Aligning decimal points ensures that each digit is in the correct place value, which is crucial for accurate calculations.

Tags

CCSS.5.NBT.B.7