Question

Tính bằng cách hợp lý :

75/100 + 18/21 + 19/32 + 1/4 + 3/21 + 13/32

Answer 1

\(=\dfrac{75:25}{100:25}+\dfrac{18}{21}+\dfrac{19}{32}+\dfrac{1}{4}+\dfrac{3}{21}+\dfrac{13}{32}\\ =\left(\dfrac{3}{4}+\dfrac{1}{4}\right)+\left(\dfrac{18}{21}+\dfrac{3}{21}\right)+\left(\dfrac{19}{32}+\dfrac{13}{32}\right)\\ =1+1+1=3\)

Answer 2

= (19/32+13/32) + (18/21+3/21) + 75/100+1/4

= 1+1+75/100+1/4

= 2+75/100+1/4

= 11/4+1/4

= 3

Đáp án là 3 nha em