1. find
(a) 3÷1/12
(b) 7 3/5
(c) 1/2+2/3-3/4
(d) 1/12×2/5
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1. find
(a) 3÷1/12
(b) 7 3/5
(c) 1/2+2/3-3/4
(d) 1/12×2/5
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a) 3÷1/12
= 3/1×12
= 3/12
= 1/4
b) 7×3/5
= 21/5
= 4.5
c) 1/2+2/3-3/4
= (12*1)+(4*2)-(3*3)/12
= (12+8-9)/12
= 11/12
d) 1/12×2/5
= 2/60
= 1/30
Verified answer
[tex]1) = 3 \div 1 \frac{1}{2} \\ \\ = 3 \div \frac{3}{2} \\ \\ = 3 \times \frac{2}{3} \\ \\ = 2[/tex]
[tex]2) = 7 \frac{3}{5} \\ \\ = \frac{48}{5} [/tex]
[tex]3) = \frac{1}{2} + \frac{2}{3} - \frac{3}{4} \\ \\ = \frac{ 6 + 8 - 9}{12} \\ \\ = \frac{6 + 1}{12} \\ \\ = \frac{7}{12} [/tex]
[tex]4) = \frac{1}{12} \times \frac{2}{5} \\ \\ = \frac{2}{60} \\ \\ = \frac{1}{30} [/tex]