The strategy
How it works
Recall easy multiples of the divisor.
Combine them to reach the dividend.
Add how many groups each multiple represents.
See it in action
Worked examples
Example 184 ÷ 7
- 7 × 10 = 70, leaving 14.
- 7 × 2 = 14.
- 10 + 2 = 12, so 84 ÷ 7 = 12.
Answer: 12
Example 296 ÷ 8
- 8 × 10 = 80, leaving 16.
- 8 × 2 = 16.
- 10 + 2 = 12.
Answer: 12
A quick heads-up
Common mistakes to avoid
- Adding the multiples but forgetting to add their group counts; 10 groups plus 2 groups is 12.
- Using a multiple of a different divisor; check each chunk shares the same divisor.
Your turn
Check your understanding
Choose an answer to see instant feedback and a short explanation. You can take the quiz again any time.
Question 1 of 3
What is 72 ÷ 8?
8 × 9 = 72, so the quotient is 9.
If 6 × 10 = 60, how many more groups of 6 make 78?
78 − 60 = 18, and 18 is 3 more groups of 6.
What is 91 ÷ 7?
7 × 10 = 70 and 7 × 3 = 21; 10 + 3 = 13.
Keep the momentum
Try a few practice problems
Choose a comfortable range and work through a short round with the free mental math trainer.