Multiplying by One-Digit Numbers
Free printable worksheets for multiplying two-digit numbers by one-digit numbers, for 4th grade. Twenty problems a page, with an answer key.
Fourth grade takes the facts learned in third and stretches them over more digits. Every problem multiplies a two-digit number by a single digit - 10 to 99 by 0 to 9 - such as 43 x 9, which is the step where a student has to carry part of the answer rather than recall it.
Twenty problems fit on a page, because each one is now several steps rather than one. The largest answer on the page is 99 x 9 = 891. Multiplying by 0 and by 1 is included, since answering those on sight is part of the skill.
What this worksheet covers
- Multiply a two-digit number by a one-digit number
- Carry from the ones into the tens when a product passes nine
- Answer a problem that multiplies by 0 or 1 on sight
Common Core standards
- 4.NBT.B.5 Multiply up to four digits by one digit, and two two-digit numbers.
Frequently asked questions
Where is the matching division?
On the Long Division page, which lays each problem out in the bracket format with room to work underneath rather than as a single line.
Can I make the multiplication harder?
Set both ranges to two digits for two-digit by two-digit problems, which is where fourth grade usually finishes up. Double Digit Multiplication is set up that way.
How do you multiply a two-digit number by one digit?
Multiply the ones first, write the ones digit of that product and carry the tens. Then multiply the tens and add what you carried. For 47 x 6: 6 x 7 is 42, so write 2 and carry 4; 6 x 4 is 24, plus 4 is 28. The answer is 282.
Why do some problems multiply by 0 or 1?
Because a fourth grader should answer 47 x 0 and 47 x 1 on sight, without starting the method. About one problem in five is one of them. Untick 0 and 1 in the one-digit range to leave them out.