Question

thuc hien phep tinh 

a, 516x2,15

b, 2,1655 : 5

c, 15/4 x 8/3 x 16/25 x 1/5

d, 3/7 : 5/4 x 3/5

Answer 1

516 x 2,15=1109,4

2,1655:50,4331

...

Answer 2

a, 516 x 2,15 = 1109,4

b, 2,1655 : 5 = 0,4331

c, \(\frac{15}{4}\)x \(\frac{8}{3}\)x \(\frac{16}{25}\)x \(\frac{1}{5}\)

= 10 x \(\frac{16}{25}x\frac{1}{5}\)

= \(\frac{32}{5}x\frac{1}{5}\)

= \(\frac{32}{25}\)

d, \(\frac{3}{7}:\frac{5}{4}x\frac{3}{5}\)

= \(\frac{3}{7}x\frac{4}{5}x\frac{3}{5}\)

= \(\frac{12}{35}x\frac{3}{5}\)

= \(\frac{36}{175}\)

Answer 3

a, 516x2,15=1109,4

b, 2,1655 : 5=0,4331

c, 15/4 x 8/3 x 16/25 x 1/5

=10x16/25 x 1/5

=6,4x1/5

=1.28

d, 3/7 : 5/4 x 3/5=12/35x3/5=36/175

Answer 4

a)516x2.15=1109.4

b)2.1655:5=0.4331

c)15/4x8/3x16/25x1/5=10x16/25x1/5=32/5x1/5=32/25

d)3/7:5/4x3/5=12/35x3/5=36/175

Answer 5

a) \(516.2,15=1109,4\)

b) \(2,1655:5=0,4331\)

c) \(\frac{15}{4}.\frac{8}{3}.\frac{16}{25}.\frac{1}{5}=\frac{32}{25}\)

d) \(\frac{3}{7}:\frac{5}{4}.\frac{3}{5}=\frac{3}{7}.\frac{4}{5}.\frac{3}{5}=\frac{36}{175}\)

k nha  Nguyễn Trí Anh

Answer 6

a)=1109,4

b)=0,4331

c)=1,28

d)=36/175