# Question Of The Week

One of the more challenging P5 question involving Whole Numbers: Peter put a total of 2250 paper cranes into 5 blue bottles and 2 green bottles. The total number of paper cranes in the green bottles was twice the total number of paper cranes in the blue bottles. There were an equal number of paper […]

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 […]

How to solve Primary 4 heuristic problem sums involving “all change”? Out of all the types of “Before-Change-After” problem sums, the more challenging ones are those that have no common base between the “before” and “after” status. This is the case when the values of the elements are changed. Below is an example of such […]

How to solve Primary 3 heuristic problem sums involving Grouping? A bicycle shop has an equal number of bicycles and tricycles. The total number of wheels is 480. How many bicycles does the bicycle shop have? Solution. 1 group = 2 wheels + 3 wheels = 5 wheels Number of groups = 480 wheels ÷ […]

How to solve Primary 5 heuristic problem sums involving Whole Numbers and Fractions? B represents a whole number. 1⁄4 of B is less than twice of B by 42. What is the value of B? Solution. 42 ÷ 7 = 6 6 x 4 = 24 The value of B is 24. #tuition #examination #suppositionconcept […]

How to solve Primary 4 heuristic problem sums involving Decimals? John and Peter had an equal amount of money at first. After John received $108.40 from his father and Peter spent $66.20, John had thrice as much money as Peter. How much money did they have altogether at first? Solution. 3 units − 1 unit […]

How to solve problem sums involving Common Identity? Common Identity Concept is first introduced and tested extensively in Primary 3. Below is an example of a Common Identity Concept question. A kettle and 3 bottles can hold 46 L of water. A kettle and 6 bottles can hold 52 L of water. How much water […]

How to solve Remainder Theory problem sums? Remainder Theory Concept is first introduced at Primary 4. Below is an example of a typical Remainder Theory question. Peter bought a book to read. He read 2⁄5 of the book on Monday, 1⁄4 of the remainder on Tuesday and the remaining 45 pages on Wednesday. How many […]

In the rectangle shown below, the ratio of SA : AB : BQ = 3 : 2 : 5, CR is 3⁄4 of QC and PB = QB. QS is a straight line. Find the ratio of the shaded region to the area the rectangle PQRS. Solution. Let area of △SQR = 7 units Area […]

John took 6 minutes to saw a plank of wood into 4 pieces. How long would he need to saw a plank of wood into 10 pieces? —————————- How to solve interval problem sums involving number of cuts? Interval concept is a commonly tested heuristic problem sums. It is first introduced at Primary 2. This […]