Does my child need to know times tables first?

It helps a lot. Each problem is a basic fact wearing a zero, so shaky facts make this page frustrating. Warm up with fact practice if needed.

Should I teach 'just add a zero'?

Teach the why alongside the shortcut: 4 × 30 means 4 groups of 3 tens, which is 12 tens. Children who only know the trick misplace zeros later in multi-digit work.

3rd grade multiplying by multiples of 10

3rd grade multiplying by multiples of 10 worksheets

These worksheets practice multiplying one-digit numbers by multiples of ten: 4 × 30, 60 × 7. Your child uses a known fact plus place value: 4 × 3 tens is 12 tens, or 120. It's the stepping stone to multi-digit multiplication.

Free printable PDF worksheet, aligned to Common Core 3.NBT.A.3.

Each print is a different sheet with its own answer key. You don't need to sign up.

The kind of problems you'll get

Find each product.

9 × 10 =
Answer: 90
6 × 10 =
Answer: 60
1 × 40 =
Answer: 40

Every print pulls a fresh set of problems at this level, so a make-up test or a second sibling never gets the same sheet.

What's on a 3rd grade sheet

The sample sheet above has 15 problems. Its answers run from 40 to 490.

Multiplying by multiples of 10. Find each product. 15 problems per page.

Every version prints on US Letter or A4, with its answer key after the problems.

How to teach this

Have your child say the hidden fact first: for 60 × 7, that's 6 × 7 = 42. Then ask "forty-two whats?" Tens. So the zero comes from meaning, not a trick. Most misses here are missing or extra zeros, so have them check whether each answer looks about ten times the basic fact.

Watch for: Kids forget the zero and write 4 × 30 = 12. The answer is 12 tens, so 120. Kids add a zero to everything and turn 60 × 7 into 4,200. One factor has one zero, so the answer gets one: 420.

Common questions about 3rd grade multiplying by multiples of 10

Does my child need to know times tables first?: It helps a lot. Each problem is a basic fact wearing a zero, so shaky facts make this page frustrating. Warm up with fact practice if needed.
Should I teach 'just add a zero'?: Teach the why alongside the shortcut: 4 × 30 means 4 groups of 3 tens, which is 12 tens. Children who only know the trick misplace zeros later in multi-digit work.

Related worksheets

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Aligned to Common Core 3.NBT.A.3. Reviewed by the One more sheet team. Content version 241, updated October 2026.

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