Mult and add Fractions

Here are some Mult and fractions

2/10 of 20=10 2 x 10=20  

5/1 of 25=5 5 x 1=5

2/4 of 40=20 2 x 4=8

⅚ of 30=5  5 x 6=40

⅓ of 21= 77 x 3=21

⅔ of 15=10 2 x 3=9

3/10 of 30=9 3 x 10=30.
And there you go :}