a) = 54

b) = 49

a) \(\frac{36x45}{6x5}\) = \(\frac{6x6x5x9}{6x5}\) = 6 x 9 = 54

a) 36x45/6x5

=6x9/1x1

=54

b) 56x63/9x8

=7x7/1x1

=49

k mk nha mk k lai

Cho mình câu B nữa bạn

36x5x64x5

{ 6 * 6 } *45

={6*45} *6

=270*6

=1620

\(\frac{36\times45}{6\times5}=\frac{6\times6\times5\times9}{6\times5}=\frac{6\times9}{1}=\frac{54}{1}=54\)

\(\frac{36x45}{6x5}\)

\(=\frac{6x6x5x9}{6x5}\)

\(=6x9\)

\(=54\)

\(36.45\div6.5\)

\(=36:6.45:5\)

\(=6.9\)

\(=54\)

    \(\frac{36\times45}{6\times5}\)

\(=\frac{6\times6\times5\times9}{6\times5}\)

\(=6\times9\)

\(=54\)

           ~Hok tốt~

a,36*45/6*5=36/6*45/5=6*9=54

b,56*63/9*8=7*7/1*1=49

a) \(\frac{36\cdot45}{6\cdot5}\)

\(=\frac{6\cdot6\cdot5\cdot9}{6\cdot5}\)

\(=6\cdot9\)

\(=54\)

b) \(\frac{56\cdot63}{9\cdot8}\)

\(=\frac{7\cdot8\cdot9\cdot7}{9\cdot8}\)

\(=7\cdot7\)

\(=49\)

a,36*45/6*5                                                                                  b,56*63/9*8

=6*6*5*9/6*5                                                                                   =7*8*7*9/9*8  = 7*7/1 =49

=6*9/1

=54

\(\frac{36\times45}{6\times5}\)\(=\)\(\frac{6\times6\times9\times5}{6\times5}\)\(=\)\(54\)

\(\frac{56\times63}{9\times8}\)\(=\)\(\frac{8\times7\times9\times7}{9\times8}\)\(=\)\(49\)

cam on

b) 49 nhé bạn 

Mình viết nhầm 

tk nhé

sao ko ai trả lời hết vậy câu dễ mà lớp 5 làm ơn giúp đi

a) \(\frac{36x45}{6x5}\)= \(\frac{6x6x5x9}{6x5}\)= 54

b) \(\frac{56x63}{9x8}\)= \(\frac{8x7x9x7}{9x8}\)= 63

ai k mình mình k lại

\(a,\\7,82+1,47+0,18\\=(7,82+0,18)+1,47\\=8+1,47\\=9,47\\---\\b,\\2,71+5,9+1,29+33,1\\=(2,71+1,29)+(5,9+33,1)\\=4+39\\=43\\\text{#}Toru\)

a: 7,82+1,47+0,18

=7,82+0,18+1,47

=8+1,47

=9,47

b: 2,71+5,9+1,29+33,1

=2,71+1,29+5,9+33,1

=4+39

=43

thanks