Multiply a 3-digit number by a 1-digit number
2 printable PDFs, each with its answer key. These sheets practice multiplying a 3-digit number by a 1-digit number in columns, like 352 × 4.
Sheet 1
Sheet 2
What's on the sheet
20 problems written in columns, on US Letter paper, with a box for the score. Some from sheet 1:
- 319 × 6 = 1914
- 129 × 7 = 903
- 627 × 9 = 5643
- 357 × 5 = 1785
Helping at home
In 4th grade, children multiply numbers up to four digits by a one-digit number. For 352 × 4, they multiply the ones (2 × 4 = 8), the tens (5 × 4 = 20, write 0 and carry 2) and the hundreds (3 × 4 = 12, plus the carried 2 makes 14). The product is 1,408.
Slips usually come from carrying: adding the carry before multiplying, or forgetting it. A 0 in the number, as in 406 × 3, can also confuse: 0 × 3 = 0, but the carry from the ones still needs to be added.
One way to help at home: estimate first. 352 × 4 is about 350 × 4, which is 1,400, so 1,408 is right on target. Breaking the number apart works too: 300 × 4 + 50 × 4 + 2 × 4 = 1,200 + 200 + 8. Solving one problem both ways builds confidence that the column steps make sense.
Practice the same skill as a game
In larkit, your child plays this skill on screen, with a second try and a hint when a problem is hard. Free to try, no ads.
Play it freeWant more sheets?
The free sheets above need no email. If you'd like extras, we can send them.
Common Core: 4.NBT.B.5