Nice work Zoe
Here is another way of looking at 137.5 million
A million is 1000000 = 10^6
so 137.5 million = $${\mathtt{137.5}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{6}}}$$ now you turn this into an ordinary number by moving the decimal point 6 places in the direction that will make the number bigger! (you will have to add some zeros)
$$\\137.500000000\times 10^6\\
=137\;\vec{5}\vec{0}\vec{0}\vec{0}\vec{0}\vec{0}.
=137500000$$
i million=1,000,000
137 million=137,000,000
0.5 million=500,000
137.5 million=137,000,000+50,000=137,500,000
so, 137.5 million takes away 100=137,500,000-1000=137,499,000
Nice work Zoe
Here is another way of looking at 137.5 million
A million is 1000000 = 10^6
so 137.5 million = $${\mathtt{137.5}}{\mathtt{\,\times\,}}{{\mathtt{10}}}^{{\mathtt{6}}}$$ now you turn this into an ordinary number by moving the decimal point 6 places in the direction that will make the number bigger! (you will have to add some zeros)
$$\\137.500000000\times 10^6\\
=137\;\vec{5}\vec{0}\vec{0}\vec{0}\vec{0}\vec{0}.
=137500000$$