Semi-formal multiplication
On this page children practise multiplying a two-digit number by a one-digit number using an extended form before the standard algorithm. Start with the short method and the examples, then use the online practice or print a worksheet with answers.
How to solve this
- Semi-formal multiplication breaks a multi-digit number into parts and multiplies each part separately: 34 × 6 = (30 × 6) + (4 × 6) = 180 + 24 = 204.
- Write each partial product on its own line; this keeps the place values clear.
- Check: estimate with rounded numbers first (30 × 6 = 180) and confirm the exact answer is close.
Examples
34 × 6 (semi-formal)
204
42 × 5 (semi-formal)
210
Practice problems with answers
Solve these problems on paper or out loud, then check the answer key. The online practice and the printable worksheet give a new set every time.
- 44 × 4 = ___
- 40 × 2 = ___
- 22 × 2 = ___
- 44 × 5 = ___
- 13 × 3 = ___
- 24 × 9 = ___
- 32 × 6 = ___
- 12 × 7 = ___
Show answers
- 176
- 80
- 44
- 220
- 39
- 216
- 192
- 84
Android app
Times Divide
Multiplication and division worksheets that follow what the child has already solved.
The app does not generate PDF sheets at random. It uses the child’s previous results, including offline sheets, so the next practice can focus on what still needs work.
- Generate printable PDFs from the child’s history.
- Enter solved offline sheets quickly after practice.
- The app shows each answer; you mark it correct or not.
Scan with a phone to open Google Play