Question

0.34 × ? = 3.4 can someone help me I don't understand

Answer 1

0.34 times what equals 3.4
basic algebra
divide both sides by .34
3.4/.34=10
now check your answer 
10 times .34 =3.4

Answer 2

Hello there!

To figure this out, let's work backwards

3.4/0.34 =10 (it is one decimal point away.) 

0.34 * 10 = 3.4 cm


Hope my answer was of assistance!

~ Fire