Question

câu 1 tính giá trị biểu thức 

a)4,19 x 50 - 132 : 2/3

b)637,38 : 18 x 2,5 

c)56,32 - 13,4 x 2,4

d)2/5 :(4/5 - 1/2)

Answer 1

a/\(4,19\times50-132:\dfrac{2}{3}\)
\(=209,5-198\)
\(=11,5\)
b/\(637,38:18\times2,5\)
\(=35,41\times2,5\)
\(=88,525\)
c/\(56,32-13,4\times2,4\)
\(=56,32-32,16\)
\(=24,16\)
d/\(\dfrac{2}{5}:\left(\dfrac{4}{5}-\dfrac{1}{2}\right)\)
\(=\dfrac{2}{5}:\dfrac{3}{10}\)
\(=\dfrac{4}{3}\)