Name________________________

WRITING RATIOS #2--KEY

Directions: Write the correct ratios for each situation below.  Write your ratio in three different ways: using words (3 reds to 12 total marbles), using a colon (3:12), and as a fraction (3/12).

R

Y

G

R

R

R

Y

R

B

R

G

R

G

Y

R

Y

B

Y

G

G

1)	 Green to Total  	2)  Red  to Yellow   	  3)  Red to Blue 	4)  Blue to Green	5)  Purple to Yellow  

     5 to 20   	           8 to 5                       8 to 2                               2 to 5                          0 to 5

     5:20 or 1:4		            8:5		   8:2 or 4:1                             2:5                              0:5

     5/20 or 1/4		            8/5		   8/2 or 4:1                             2/5                              0/5

6)	Red to Total  	7)  Red  to Green   	  8)  Green to Red 	9)  Green to Yellow	10)  Blue to Red  

     8 to 20   	           8 to 5                       5 to 8                               5 to 5                          2 to 8

      8:20 or 2:5	             8:5		        5:8                              5:5 or 1:1                    2:8 or 1:4

      8/20 or 2:5		 8/5		        5/8                              5/5 or 1/1                    2/8 or 1/4

  

11)	 Clouds to Moons  	12)  Moons to Stars  	  13)  Suns to Total 	14)  Moons to Moons	15)  Moons to Total
  
     1 to 4   	                         4 to 9                            4 to 18                           4 to 4                           4 to 18

      1:4			  4:9		        4:18 or 2/9                      4:4 or 1:1                         4:15

            1/4		              4/9		        4/18 or 2/9                      4/4 or 1/1                          4/15

16)	 Moons to Clouds  	17)  Stars to Moons   	  18)  Stars to Suns 	19)  Clouds to Suns	20)  Stars to Total 
 
        4 to 1   	             9 to 4                             9 to 4                            1 to 4                        9 to 18

         4:1 	                          9:4 		                9:4                                1:4                     9:18 or 1:2

               4/1 	                          9/4		                9/4                                1/4                     9/18 or 1/2

www.imathworksheets.com