Question

$3 \frac{2}{5} \times \frac{2}{4}$
$7 \frac{6}{9} + 9 \frac{5}{9}$
$9 \frac{1}{4} + 3 \frac{4}{5}$
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Answer 1

3. 2/5 x2/4
3 x2+2/5= 15+2/5=17/5
17/5x2/4 simplificar 2/4 ÷2=1/2
17/5x1/2=17 x 1/5x2=17/10
17/10=1,7

7. 6/9+9. 5/9
7+9+6+5/9=16+11/9
16+1+2/9=17+2/9
17x9+2=155/9=17,2

9. 1/4+3. 4/5
(9+3)+(1/4+4/5)=12+21/20 convertir fracción impropia a mixta 12+1x20/20+1/20
12+1+1/20=13. +1/20
13. 1/20

13 x20+1=261/20=13,05