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Decimal multiplication worksheets

The worksheets provide calculation practice for decimal multiplication (both mental math and multiplication algorithm). They are meant for 5th - 6th grades.

Jump to: Mental multiplicationBy powers of tenLong multiplication

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Copying permission: you can freely print and copy unlimited copies of the worksheets for use in the classroom, home, tutoring center—anywhere you might be teaching. If you want to distribute the links or worksheets on a website or publication, please contact me.

Mental multiplication - decimals

Multiply a whole number and a decimal - easy (one decimal digit)
Multiply a whole number and a decimal - harder (one decimal digit)
Multiply a whole number and a decimal - missing factor (one decimal digit)

Multiply a whole number and a decimal (1-2 decimal digits)
Multiply a whole number and a decimal - missing factor (1-2 decimal digits)

Multiply a whole number and a decimal (1-3 decimal digits)
Multiply a whole number and a decimal - missing factor (1-3 decimal digits)

Multiply decimals by decimals
Multiply decimals by decimals - missing factor

Multiply a decimal by decimal mentally (up to 2 decimal digits times 2 decimal digits)
Multiply a decimal by decimal mentally (up to 3 decimal digits times 3 decimal digits)
Missing factor problems 1 (decimal by decimal, 1 or 2 decimals)
Missing factor problems 2 (decimal by decimal, 1-3 decimals)

Multiply decimals by decimals or whole numbers (mixed practice)
Multiply decimals by decimals or whole numbers - missing factor (mixed practice)

Multiply decimals by powers of ten

Multiply by 10 or 100 (1-2 decimal digits)
Multiply by 10, 100, or 1000 (1-2 decimal digits)
Multiply by 10, 100, or 1000 - missing factor (1-2 decimal digits)

Multiply by 10 or 100 (1-3 decimal digits)
Multiply by 10, 100, or 1000 (1-3 decimal digits)
Like above, but missing factor
Multiply by 10, 100, 1000, 10000, or 100000 (1-3 decimal digits)
Multiply decimals by 10, 100, or 1000 - missing factor (1-3 decimal digits)

Multiply decimals by 10, 100, 1000, 10000, or 100,000 (1-5 decimal digits)
Like above but missing factor

See also my free lesson Multiply and Divide Decimals by 10, 100, and 1000 (powers of ten)



Math Mammoth Decimals 1

A self-teaching worktext for 4th grade that gives a solid foundation for decimals. It covers tenths and hundredths, comparing decimals, adding and subtracting decimals both mentally and in columns, multiplying decimals by whole numbers, rounding, estimating, and money problems.

Download ($3.50). Also available as a printed copy.

=> Learn more and see the free samples!

See more topical Math Mammoth books


Long multiplication (multiplication algorithm)

Multiply a decimal by a whole number (0-2 decimal digits)
Multiply a decimal by a whole number (0-3 decimal digits)
Multiply decimals by decimals (1-2 decimal digits)

Multiply a decimal with 1-2 decimal digits by another decimal with 1-2 decimal digits
Multiply a decimal with 1-3 decimal digits by another decimal with 1-3 decimal digits
Multiply decimals, writing the numbers under each other (0-2 decimal digits)
Multiply decimals, writing the numbers under each other (0-3 decimal digits)


See also my free lessons

  • Multiply Decimals By Whole Numbers
  • Multiply Decimals By Decimals


  • Math Mammoth Decimals 2

    A self-teaching worktext for 5th-6th grade that covers the four operations with decimals up to three decimal digits, concentrating on decimal multiplication and division. The book also covers place value, comparing, rounding, addition and subtraction of decimals. There are a lot of mental math problems.

    Download ($6.25). Also available as a printed copy.

    => Learn more and see the free samples!


    Practice makes perfect. Practice math at IXL.com

    Free math worksheets and practice - Adapted Mind



    Practice makes perfect. Practice math at IXL.com