Question

用四舍五入法将0.05049精确到千分位是______，将4.34×10 4 精确到千位是______．

Answer 1

将0.05049精确到千分位是0.050，

∵4.34×10 ⁴=43400≈4.3×10 ⁴．

∴将4.34×10 ⁴精确到千位是4.3×10 ⁴．

故答案为0.050，4.3×10 ⁴．