Question

Much of Mathematics teaching is actually about encouraging children to become more aware about patterns they find and to use them in their thinking. Illustrate this in the case of the situation given below by answering the questions given in questions (i), (ii) and (iii), below.

"A mathematics teacher in class 5 showed the following pattern in the class.

46 x 44 = 2024

63 × 67 = 4221

71 × 79 = 4909

She gave some time for the students to identify the pattern. After some time she asked the students to find the answer of "84 x 86" in one second. One student answered 7224. Based on this situation, answer the following question.

i) What is the pattern used by the student?

ii) Explain why it works?

iii) Describe how it helps to encourage mathematical thinking.

18 Feb 2025
Answer :
Word Count : 387
Let's analyze the given pattern step by step. ### Identifying the Pattern (Question i) Looking at the given multiplications: 1. 46 × 44 = 2024 2. 63 × 67 = 4221 3. 71 × 79 = 4909 Observing closely, we see that each pair consists of two numbers that are equidistant from a central number: - 46 and 44 are centered around 45 - 63 and 67 are centered around 65 - 71 and 79 are centered around 75 It appears that the product follows the pattern: \[ (a - n) \times (a + n) = __________ _______ __________ _________ _______ ______.
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