Mary has 12 marbles.3/12 of the marbles are yellow and 2/12 of the marbles are blue.The rest of the marbles are green.How many marbles are green?Explain how you know.
To get the answer we have to subtract from 12 marbles 3/12 of 12 and 2/12 of 12. [tex] \frac{3}{12}*12= 3 [/tex] - we can sipllify 12 here [tex] \frac{2}{12}*12=2 [/tex] 12-3=9 9-2=7 - its the answer
