Question

1) Tính

a) 5/2 + 1/4 x 1/8

=

=

=

=

b) 4/3 + 1/3 - 1/5

=

=

=

=

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Answer 1

\(\frac{5}{2}\) + \(\frac{1}{4}\) x \(\frac{1}{8}\)

= \(\frac{5}{2}\) + \(\frac{1}{32}\)

= \(\frac{80}{32}\) + \(\frac{1}{32}\)

= \(\frac{81}{32}\)

\(\frac{4}{3}\) + \(\frac{1}{3}\) - \(\frac{1}{5}\)

= \(\frac{5}{3}\) - \(\frac{1}{5}\)

= \(\frac{25}{15}\) - \(\frac{3}{15}\)

= \(\frac{22}{15}\)

Answer 2

a)

=5/2+1/32

=80/32+1/32

=81/32

b)4/3+1/3-1/5

=5/3-1/5

=25/15-3/15

=22/15

Answer 3

5/2 + 1/4 x 1/8 

= 5/2 + 1/32

=81/32

4/3 + 1/3 - 1/5

=5/3    - 1/5

= 22/15

Answer 4

a] \(\frac{5}{2}\)+\(\frac{1}{4}\)x\(\frac{1}{8}\)

=\(\frac{5}{2}\)+\(\frac{1}{32}\)

=\(\frac{80}{32}\)+\(\frac{1}{32}\)

=\(\frac{81}{32}\)

b] \(\frac{4}{3}\)+ \(\frac{1}{3}\)- \(\frac{1}{5}\)

=\(\frac{5}{3}\)- \(\frac{1}{5}\)

=\(\frac{25}{15}\)- \(\frac{3}{15}\)

=\(\frac{22}{15}\)

Answer 5

a.5/2+1/4x1/8

=5/2+1/32

=81/32

b.4/3+1/3-1/5

=5/3-1/5

=22/15

Answer 6

a)5/2+1/4x1/8

= 5/2+1/32

=81/32

b)4/3+1/3-1/5

=5/3-1/5

=22/15

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Answer 7

a,

=40/16+4/16.2/16

=40+4.2/16

48/16=3

b,

=20/15+5/15-3/15

=20+5-3/15

=22/15