Find the square of 456.1. 2114762. 2079363. 2045364. 2098765. 205556

1.	Find the square of 456.1. 2114762. 2079363. 2045364. 2098765. 205556
Answer» Correct Answer - Option 2 : 207936 Concept used: Calculation skills trick. Calculation: Step - 1 Break down the number in such a way that the unit digit is separate and ten’s and hundred’s digit is together i.e. 45 and 6. Write down the squares of each of the parts in two digit format. 45² Right most two digits will be 5²= 25 Left digits are to be found by multiplying the remaining number by its next number i.e. 4 × 5 = 20 So, 45² = 2025 and 6² = 36 The number obtained after this step is 202536. Step – 2 Multiply the digits with each other and also with the power 2 i.e. 45 × 6 × 2 = 540 Step – 3 Add the number obtained in step - 1 with the number obtained in step – 2 keeping the unit place empty i.e. 2 0 2 5 3 6 _ _ 5 4 0 _ 2 0 7 9 3 6 This is our final answer

Answer» Correct Answer - Option 2 : 207936

Concept used:

Calculation skills trick.

Calculation:

Step - 1

Break down the number in such a way that the unit digit is separate and ten’s and hundred’s digit is together i.e. 45 and 6.

Write down the squares of each of the parts in two digit format.

45²

Right most two digits will be 5²= 25

Left digits are to be found by multiplying the remaining number by its next number i.e. 4 × 5 = 20

So, 45² = 2025 and 6² = 36

The number obtained after this step is 202536.

Step – 2

Multiply the digits with each other and also with the power 2 i.e. 45 × 6 × 2 = 540

Step – 3

Add the number obtained in step - 1 with the number obtained in step – 2 keeping the unit place empty i.e.

2 0 2 5 3 6

_ _ 5 4 0 _

2 0 7 9 3 6

This is our final answer

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