Step by step
The question
Question: write 3/10 as a decimal.
310
1 Write the decimal
10 has 1 zero.
So the decimal has 1 digit after the point.
10: 1 zero → 1 digit after the point
3 tenths is 0.3.
= 0.3
2 Check
Let's check: the decimal times the bottom should give the top.
0.3 times 10.
Check: 0.3 × 10
Forget the points: 3 times 10 is 30.
The numbers have 1 digit after the point.
So the answer has 1 too: 3.0, which is 3.
3 × 10 = 30 → 3.0
We get 3, the top.
So the answer is right!
0.3 × 10 = 3
Let's look back.
First: write the decimal.
Last: check.
Answer
= 0.3