Analysis of Class 5 IMO
As of 2021, the SOF IMO consists of 4 sections for a total of 15 questions. Out of these, there are 15 questions for logical reasoning, 20 questions on mathematical reasoning, 10 on everyday mathematics which is evaluated for one mark (per question). There is also an achiever’s section in which 5 questions are asked and evaluated for 3 marks each. This article talks about the kinds of questions asked in the IMO exam. For learning more about this exam, do solve IMO Class 5 Previous Year Paper 2013 and check out the official websites of the International Math Olympiads.
Patterns, Analogy, and Classification, Geometrical Shapes
The pattern is a repeated decorative design and one type of the questions asked in IMO. The questions of this include the number patterns or symbol patterns where they ask you to predict what pattern would come next, or what pattern would fit the diagram to make it complete.
Classification analogy is a type of analogy that will compare terms based on what group they belong to. The common question is if x is related to y, who is related to a. Over here, it’s necessary to find out how x is related to y.
The geometrical shapes questions expect you to analyze the shapes correctly and apply critical thinking too if necessary.
Water and mirror images, direction sense test, ranking test
Mirror image and water image problems use a bit of visualization to reach the right answer. The question gives a picture and asks you to find out what could be the mirror/ water image. One thing to note is that the mirror image is laterally inverted whereas the water image is upside down.
The direction sense test problem starts from point 0 where the person walks for x number of steps in direction y, followed by steps in direction b and so on. The question asks you to find out the final position of the person.
An example of the ranking test problem includes the arrangement of ranks or position of something either from top to bottom, or left to right.
Alphabet Test, Logical Sequence of Words
Alphabet test comes under the general mental ability segment of reasoning. In this type of question, a bunch of arrangements of letters/words is given and you need to find the position of letter/word based on the arrangements.
The logical sequence of words on the other hand is the type of reasoning that consists of words and one has to find out a sequence that sounds logical in that context. An example of this problem is that you need to arrange the following words in a meaningful sequence.
Puzzle Test, Coding-Decoding
The puzzle test again comes under the general mental ability segment of reasoning and is important yet an easy topic. In this type, there are questions in which certain items will belong to different groups or have different qualities. Clues are provided here and there with the help of which, the student is expected to analyze the given items and arrive at the solution.
Coding-decoding belongs to the logical reasoning section and is nothing but encryption-decryption. The question either asks you to encrypt a word, a number in a particular code or pattern from the rules given, or it asks you to decrypt the pattern into its original form from the given hints.
Numerals, Number names, and Number Sense
Numerals are number problems. Number names are the infinite cardinal numbers starting from 1 to n which are written in their word form. These types of questions include giving some information about the place value of the number of describing the problem in another manner. Problems with number sense include showing the number in words and asking you to write the number in digits or finding out which number does not belong to the collection of the numbers.
Computation Operations, Fractions, and Decimals
Computation includes calculating or determining something by mathematical or logical method and computation operations for class 5 include various operations on addition, subtraction, multiplication, and division.
Fraction explains how many parts of a whole and decimal is a fraction where the denominator is a power of ten and can be written in decimal point. The questions like these include problems where a diagram is given and how many fractions of x shape are present is questioned.
Measurement of length, weight, time, capacity, temperature, and money, conversions
These kinds of questions are based on the conversion of one unit to another or adding up a certain amount of something. Most frequently asked as word problems, an example of time problem this includes giving the time in days and it is expected to convert them into minutes.
Angles, Perimeter of Various Shapes, Area of Rectangle and Square
Angle is usually measured in degrees and it is the space between two intersecting lines or a surface(s). The perimeter of various shapes can be calculated by measuring the continuous line which forms the boundary of a closed geometrical figure. The area of a rectangle is length times breadth whereas the area of a square is side times side and its unit is square units.
An example of a perimeter problem is when a figure is provided out of which a certain portion is shaded. You are expected to find out the perimeter of the shaded region. Then there are questions where you are expected to find the length when the perimeter is provided and more. Area problems sometimes ask questions where you need to imagine what shape the object makes and apply that formula to find out the area.
Symmetry is the balance and proportionate similarity found in two halves of an object. In this type of question, a figure is provided and you need to find out what shape must be shaded to make the figure symmetrical.
Data handling means collecting the set of data and you can present them in a different form. Because, data handling is important for higher classes, a few questions based on data handling is asked in IMO.
HCF and LCM questions check for your knowledge of formulas and find means of the way to the number that can lead to the golden answer.