Question

14/15+3/11+1/15+3/11+10/22

9,25+9,25x8+9,25

tính thuận tiện

Answer 1

a) 14/15 + 3/11 + 1/15 + 3/11 + 10/22

= ( 14/15 + 1/15 ) + ( 3/11 + 3/11 + 10/22 )

= 1 + 1

= 2 

b) 9,25 + 9,25 x 8 + 9,25

= 9,25 x ( 1 + 8 + 1)

= 9,25 x 10

= 92,5

Answer 2

a/ \(\frac{14}{15}+\frac{3}{11}+\frac{1}{15}+\frac{3}{11}+\frac{10}{22}=\left(\frac{14}{15}+\frac{1}{15}\right)+\left(\frac{3}{11}+\frac{3}{11}+\frac{2x5}{2x11}\right)=\)

\(=\frac{15}{15}+\frac{11}{11}=1+1=2\)

b/ 9,25+9,25x8+9,25=9,25(1+8+1)=9,25x10=92,5

Answer 3

92,5 nh bn

Answer 4

92,5 nha bn.

Answer 5

a) \(\frac{14}{15}+\frac{3}{11}+\frac{1}{15}+\frac{3}{11}+\frac{10}{22}=?\)

\(\left(\frac{14}{15}+\frac{1}{15}\right)+\left(\frac{3}{11}+\frac{3}{11}+\frac{10}{22}\right)\)

\(=1+1=????\)

\(=>:=2\)

b) 9,25 + 9,25 x 8 + 9,25

= 9,25 x ( 1 + 8 + 1 ) = ?

= 9,25 x 10 = ?

= 92,5

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