SOF International Mathematics Olympiad (IMO)
·
IMO Level 1
·
2026
.
Sample
Express 20/32 in its lowest terms.
Explanation
Explanation
The HCF of 20 and 32 is 4. Dividing numerator and denominator by 4 gives 20/32 = 5/8, which is in lowest terms since the new numerator and denominator share no common factor other than 1.
PRO TIP
Re-check your working by substituting the answer back into the original question.
Related Questions
Fill in the blank: The ratio of boys to girls in a class is 4 : 5. If the class has 36 students in all, the number of girls is ______.