No. More context needs to read. The final answer is that Noah was actually 598 years old at the start of the flood.
There was a longstanding enigma due to a mere misinterpretation of the word “life”. It caused a math problem that could not have been solved prior to about 1970 AD, when scientists discovered that human “life” doesn’t start at birth, along with “age” and “years old”. Human “life”/childhood starts at conception. Biologically the mother is needed to keep the child alive, so her motherhood starts when the childhood begins. The fatherhood starts at conception too, not months later.
Applying this view solved the enigma. The 3 verses alone seem to present a 2-year discrepancy at first. (The answer is within them).
Gen 5:32 When Noah was five hundred years old, he became the
father of Shem, Ham, and Japheth.
Noah became Shem’s father when Noah was 500 years old, but that was at conception. Shem wouldn’t be born for 9 months. Noah was therefore 501 years older than Shem.
Gen 7:11 In the six hundredth year of Noah’s life, in the second
month, on the seventeenth day of the month: it was on that day
that all the fountains of the great abyss burst forth, and the
floodgates of the sky were opened.
When the flood began, the amount of Noah’s “life” that had elapsed was 599 years, 1 month, 16 days. With the first 9 months having been in his mother’s womb, Noah would have been 598 years old when the flood began.
Shem would have been 97 when the flood began. (Noah’s 598 less their age difference of 501).
There are three ways to show the flood lasted just beyond one year, so that everyone’s age changed. The best example is through Noah’s one year ten days (i.e. the difference between his exact ages at the beginning and the end of the flood).
Adding one year to Shem’s 97 at the start of the flood would have him 98 at the end. Two years later he would have been 100, as Gen 11:10 shows.
Gen 11:10 This is the record of the descendants of Shem. When
Shem was one hundred years old, he became the father of
Arpachshad, two years after the flood.
The math on this and 2 other enigmas will only work when applying the belief that “life”/childhood, fatherhood, and motherhood start simultaneously at conception, and that “age” and “years old” start at birth.
Noah was 598 years old when the flood began.