JKP Constable 2026 Classes Live | Day 2 | Maths Class | Basics to Advance

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JKP CONSTABLE ➡️ https://tumqa.on-app.in/app/oc/775184...

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The instructor covers several key methods:

• Multiplication by breaking down numbers (2:06): Instead of traditional carrying, the instructor suggests multiplying the tens digit first, adding a zero, and then multiplying the units digit, finally adding the two results. This method is extended to three-digit numbers as well (3:59).
• Multiplication of numbers with unit digits summing to 10 (8:06): For numbers like 72 x 78, where the unit digits (2 and 8) add up to 10, the method involves multiplying the unit digits (2x8=16) and then multiplying the tens digit (7) by the next consecutive number (8), resulting in 56. The two results are combined (5616).
• Multiplication of consecutive numbers (11:17): To multiply consecutive numbers (e.g., 17 x 18), the instructor advises squaring the smaller number (17^2) and then adding the smaller number to the result (289 + 17).
• Multiplication of alternate numbers (numbers with a gap of 1) (13:52): For numbers like 26 x 28, the method involves squaring the middle number (27^2) and subtracting 1 from the result (729 - 1 = 728). This technique is generalized for larger gaps as well (16:16), where you square the middle number and subtract the square of the gap.
• Multiplication by 5 (19:28): To multiply any number by 5, divide the number by 2 and add a zero at the end. For odd numbers, dividing by 2 will result in a .5, which means the zero will consume the decimal, resulting in a whole number (e.g., 77 * 5: half of 77 is 38.5, add a zero to get 385).
• Multiplication by 25 (22:19): To multiply any number by 25, divide the number by 4 and add two zeros at the end. Similar adjustments for remainders are discussed (23:31).
• Multiplication by numbers ending in 5 (27:15): The instructor demonstrates how to double the number ending in 5 and halve the other number to simplify the multiplication.
• Multiplication by 11 (29:41): To multiply a number by 11, multiply the number by 10 and then add the original number to the result.
• Multiplication involving decimals ending in .5, .25, or .75 (30:49, 31:58): The video explains how to adjust the numbers by doubling/halving or multiplying by 4 to eliminate decimals and simplify the multiplication.

The video emphasizes the importance of practice (7:01, 22:01, 30:26) and encourages students to solve problems concurrently during the class (5:20). The instructor also provides information on how to access their online and offline courses for JKP Constable preparation (35:33-36:13).