## Blog

# #32. Question of the Week

- September 13, 2019
- Posted by: mmadmin
- Category: Question Of The Week

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**How to solve Primary 2 heuristic problem sums involving “Calendar”?**

Most **primary 2 **children are able to solve “Time” related problem sums except for “Time” problem sums that involve the use of the calendar. The methodology to solve such questions is using Interval Concept. Below is an example of such a question.

In a certain year, 6th July fell on a Friday. Which day of the week was 19th July of the same year?

**Solution.**

Difference in days → 19 – 6 = 13

1 interval (1 week ) → 7 days

Number of interval = 13 ÷ 7 = 1 R6 (1 week 6 days)

**Answer: Thursday**

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