Let's solve this step by step.
We are given a list of numbers and need to classify each as
Rational or
Irrational.
---
🔹 Definitions:
-
Rational Numbers: Can be written as a
fraction (ratio of two integers), have
terminating or
repeating decimal expansions.
-
Irrational Numbers:
Cannot be written as a simple fraction, have
non-repeating, non-terminating decimals.
---
🔍 Let's analyze each number:
1.
3.14
→ This is a
terminating decimal, so it’s
rational.
✔ Rational
2.
0.444
→ Terminating decimal →
rational
✔ Rational
3.
√121
→ √121 = 11 (perfect square) → integer →
rational
✔ Rational
4.
√1000
→ √1000 ≈ 31.622..., not a perfect square, and non-repeating →
irrational
✘ Irrational
5.
π
→ Famous irrational number →
irrational
✘ Irrational
6.
π/7
→ π is irrational; dividing it by 7 (a rational number) still gives an irrational number.
→
Irrational
✘ Irrational
7.
0.333...
→ Repeating decimal → can be written as 1/3 →
rational
✔ Rational
8.
1.12313...
→ The ellipsis (...) suggests non-repeating, non-terminating (no pattern shown).
→ Likely
irrational (not repeating, no clear pattern)
✘ Irrational
9.
0.12̅ (i.e., 0.121212...)
→ Repeating decimal →
rational
✔ Rational
10.
e
→ Euler’s number, known to be
irrational
✘ Irrational
11.
∛9 (cube root of 9)
→ 9 is not a perfect cube → ∛9 ≈ 2.08..., non-repeating →
irrational
✘ Irrational
12.
2.9̅ (i.e., 2.9999...)
→ Repeating decimal →
rational
(Note: 2.9̅ = 3, actually!)
✔ Rational
13.
2e
→ e is irrational, multiplying by 2 (rational) → still
irrational
✘ Irrational
14.
1.234̅ (i.e., 1.234234234...)
→ Repeating decimal →
rational
✔ Rational
15.
∛8
→ ∛8 = 2 → perfect cube → integer →
rational
✔ Rational
---
✔ Final Classification:
####
Rational Numbers:
- 3.14
- 0.444
- √121 = 11
- 0.333...
- 0.12̅
- 2.9̅
- 1.234̅
- ∛8 = 2
✔ 8 Rational numbers
####
Irrational Numbers:
- √1000
- π
- π/7
- 1.12313... (non-repeating)
- e
- ∛9
- 2e
✔ 7 Irrational numbers
---
📊 Fill in the Table:
####
Rational Column (8 boxes):
```
3.14
0.444
√121
0.333...
0.12̅
2.9̅
1.234̅
∛8
```
####
Irrational Column (7 boxes):
```
√1000
π
π/7
1.12313...
e
∛9
2e
```
---
✔ Answer Summary:
| Rational | Irrational |
|--------|------------|
| 3.14 | √1000 |
| 0.444 | π |
| √121 | π/7 |
| 0.333... | 1.12313... |
| 0.12̅ | e |
| 2.9̅ | ∛9 |
| 1.234̅ | 2e |
| ∛8 | |
> Note: There are 8 rational and 7 irrational numbers — match accordingly.
---
Let me know if you'd like a printable version or explanation for any specific number!
Parent Tip: Review the logic above to help your child master the concept of identify rational numbers worksheet.