(1)取(1.25+1.5)/2≈1.4,1.4²=1.96,1.4²<2<1.5²,得1.4<√2<1.5,即十分位上的数字为4
(2)取(1.4+1.5)/2=1.45,1.45²≈2.1,由2<1.45²<1.5²,得1.4<√2<1.45
(3)取(1.4+1.45)/2≈1.43,1.43²≈2.04,由2<1.43²<1.45²,得1.4<√2<1.43
(4)取(1.4+1.43)/2≈1.42,1.42²≈2.02,由2<1.42²<1.43²,得1.4<√2<1.42
(5)取(1.4+1.42)/2=1.41,1.41²≈1.99,由1.41²<2<1.42²,得1.41<√2<1.42,
即百分位上的数字为1