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yKpoI14uk [10]
3 years ago
15

Show work when multiplying 3.9×5.3

Mathematics
2 answers:
frozen [14]3 years ago
7 0
I use the expansion distributive thing

remember a(b+c)=ab+ac
3.9=4-0.1
3.9 times 5.3=
(4-0.1) times 5.3=
5.3(4-0.1)=
5.3(4)+5.3(-0.1)=
(5+0.3)4+5.3(-0.1)=
20+1.2-0.52=
20+0.68=
20.68
taht's one way
horrorfan [7]3 years ago
4 0
3.9 x 5.3 = 20.67 

im not really sure how i would show my work while typing, but if you really need to see it i could insert a picture, let me know. 
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