Question

1. Find the value of following squares without multiplying them:
(i) 26²
(ii) 34²
(iii) 53²
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Answer 1

Answer:

(i)676(ii)1156(iii)2809

Answer 2

Answer:

(i)26² =(20+6)(20+6)

=20X20+20X6 + 6X20+6X6

=400+120 + 120+36

=676

(ii)34² =(30+4)(30+4)

=30X30+30X4 + 4X30+4X4

=900+120+120+16

=1156

(iii)53² =(50+3)(50+3)

=50X50+50X3 + 3X50+3X3

=2500+150 + 150+9

=2809