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प्रश्न
Circle the correct multiplication fact (by using method of casting out nine).
132 × 43 = 5676
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उत्तर
132 × 43 = 5676
6 × 7 = 5 + 6 + 7 + 6
42 = 24
6 = 6
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Did you notice some pattern in the answers?
Take the first two odd numbers. Now add them, see what you get. Now, at every step, add the next odd number.|
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