2 half dollars just mean a dollar. In that case, that's 10 dimes. (10*10=100)
1cm=10mm
700mm= 70cm
600mm=60cm
70cm:25cm=2,8 - on length only 2 fit into
60cm:25=2,4 - on width only 2 fit into
Two 25cm in diameter fit into the baking tray.
7.
One way to figure this out is to go from 2-10, and multiply them by them self each other to see what number works.
Another way is to use a calculator and the square root button.
Hope that helps!
Let's write 2 equations from the two statements given.
<em>Sarah spent 10 dollars on both oranges and apples</em>
<em />
Let the price of oranges be "x" and price of apples be "y", thus we can write:

Oranges cost 3 less than apples, thus we can say:

We can substitute this into the first equation and solve for y:

Thus, let's solve for x now,

We want the price of oranges (x), thus,
<em>Price of Oranges = $3.50</em>