find 1by2 of i) 2by3by4 ii) 4by 2by9
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Answer:
I) 1by2 × 2by3by4
=1by2 × (2+ 3by4)
=1by2 × (2×4+3 by 4)
=1by2 × (8+3 by4)
=1by2 × 11 by 4
=11 by 2×4 = 11by8
Convery into mixed fraction
= 1 3/8
ii) =1by2 × 4by 2by9
=1by2 × (4+ 2by9)
=1by2 × (4×9+2 by 9)
=1by2 × (36+2 by9)
=1by2 ×38by9
=38by2×9 = 19by9
Convert into mixed fraction
=2 1/9
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