# [RUBY] I want to truncate after the decimal point

## 【Overview】

** 1. Conclusion </ b>**

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**** 2. How to use </ b>**

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**** 3. What I learned from here </ b>**

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- Conclusion

Use the ** floor method </ b>!**

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2. How to use

```
def cal_points(point)
if point < 6000
cal_point = points * 0.05
else
cal_point = points * 0.1
end
puts "The point is#{cal_point.floor}Is a point"
end
```

In the above, the calculation with a decimal point in the if conditional expression is truncated from # {cal_point.floor}.
The floor method is applied to the expression expansion.

Reference URL:
Truncate / round up / round off numbers in Ruby

- What I learned from here

There are also round method (rounding) and ceil method (rounding up). You can also use ***. Round (1) to "round to the first decimal place" or ***. Round (-1) to round to the first decimal place.

```
ex)1.23.round(1) #1.2
ex)123.round(-1) #120
```

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