58×42+32×8+5×16
=58×42+32×8+5×2×8
=58×42+32×8+10×8
=58×42+8×(32+10)
=58×42+8×42
=42×(58+8)
=42×66
=2772
58 x 42 + 32 x 8 + 5 x 16
= 2772
^_^
\(58\text{}\text{}\times42+32\text{}\text{}\times8+5\text{}\text{}\times16\)
\(=58\text{}\text{}\times42+32\text{}\text{}\times8+5\text{}\text{}\times2\text{}\text{}\times8\)
\(=58\text{}\text{}\times42+32\text{}\text{}\times8+10\text{}\text{}\times8\)
\(=58\text{}\text{}\times42+\left(32+10\right)\text{}\text{}\times8\)
\(=58\text{}\text{}\times42+42\text{}\text{}\times8\)
\(=\left(58+8\right)\text{}\text{}\times42\)
\(=66\text{}\text{}\times42\)
\(=2772\)
_Chúc bạn học tốt_
58 x 42 +32 x 8 + 5 x 16 = (58 + 42 ) x (32 + 8 ) x (5 + 16 )
= 100 x 40 x 21
= 4000 x 21
= 84000
58 x 42 + 32 x 8 + 5 x 16
= 58 x 42 + 32 x 8 + 5 x 2 x 8
= 58 x 42 + 32 x 8 + 10 x 8
= 58 x 42 + 8 x ( 32 + 10 )
= 58 x 42 + 8 x 42
= ( 58 + 8 ) x 42
= 64 x 42
= 2688.
