24
Question Find the answers to the following questions based on the given information.
(a) 17 × 23 = 391
(b) 17 × 24 = _______
(c) 17 × 22 = _______
(d) 16 × 23 = _______
(e) 8 × 9 = 72
(f) 18 × 9 = _______
(g) 28 × 9 = _______
(h) 108 × 9 = _______
(i) 18 × 23 = _______
(a) 17 × 23 = 391
(b) 17 × 24 = 408
(c) 17 × 22 = 374
(d) 16 × 23 = 368
(e) 8 × 9 = 72
(f) 18 × 9 = 162
(g) 28 × 9 = 252
(h) 108 × 9 = 972
To find 17 × 24, how much is to be added to 17 × 23 _____ 17 or 23?
Solution:
17 × 24 = 17 × 23 + (17) = 391 + (17)
To find 18 × 23, how much is to be added to 17 × 23 _____ 17 or 23?
Solution:
18 × 23 = 17 × 23 + (23)
= 391 + (23)
= 414
NCERT Textbook Pages 87-88
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