Tính bằng cách thuận tiện nhất :
a / 2 x 4 x 8 x 0.5 x 0.125 x 0.25 x ( 0.4321 + 0.5679 )
b /3.7 x 3.8 + 8.3 x 3.7 - 0.4 x 3.7 x 5
1/2:0.5-1/4:0.25+1/8:0.125-1/10:0.1
1/2 : 0.5 - 1/4 : 0.25 + 1/8 : 0.125 - 1/10 : 0.1
1/2:0.5-1/4:0.25+1/8:0.125-1/10:0.1
1/2:0.5-1/4:0.25+1/8:0.125-1/10:0.1
Tính bằng cách thuận tiện
1/10 + 1/2 : 0.5 - 1/4 : 0.25 + 1/8 : 0.125
Tính nhanh:
\(25\%+\dfrac{3}{4}+\dfrac{1}{2}:0.5-\dfrac{1}{4}:0.25+\dfrac{1}{8}:0.125\)
tính nhanh
1/2:0.5-1/4|:0.25+1/8:0.125-1/10:0.1
tinh nhanh
1/2/0.5-1/4/0.25+1/8/0.125-1/10/0.1