Bài 1:
a) \(6,125\approx6,13\)
b) \(21,333\approx21,33\)
c) \(5,666\approx5,67\)
d) \(5,346\approx5,35\)
e) \(2,\left(321\right)=2,321321...\approx2,32\)
f) \(-4,63\left(3\right)=-4.6333...\approx-4,63\)
g) \(\dfrac{3}{7}=0,\left(428571\right)\approx0,43\)
Bài 2:
a) \(\sqrt{2}\approx1,414\)
b) \(\sqrt{2}\approx1,41\)
c) \(\sqrt{2}\approx1,4\)
Bài 1 :
a) \(6,125\sim6,1\)
b) \(21,333\sim21,3\)
c) \(5,666\sim5,7\)
d) \(5,346\sim5,3\)
e) \(2,\left(312\right)\sim2,3\)
f) \(-4,63\left(3\right)=-4,6\)
g) \(\dfrac{3}{7}\sim0,429\sim0,4\)