Musical Intervals 1 - Number only Intervals - worksheet | Teaching ... - Free Printable

You’re working on identifying intervals in music — specifically, the distance between two notes, counted from the bottom note (the “root”) as number 1.

Let’s solve this step by step for both sections: C major and F major.

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## 🎼 PART 1: C MAJOR (Bottom note = C = 1)

We count every line and space upward from C.

The C major scale is:
C (1), D (2), E (3), F (4), G (5), A (6), B (7), C (8)

You’re given a staff with note pairs. The first one is labeled “4th” — that’s C to F (C=1, D=2, E=3, F=4 → perfect 4th).

Now let’s go note by note:

Pair 1: C to F → Perfect 4th ✔ (already given)

Pair 2: C to G →

C(1) – D(2) – E(3) – F(4) – G(5) → Perfect 5th

Pair 3: C to E →

C(1) – D(2) – E(3) → Major 3rd

Pair 4: C to A →

C(1) – D(2) – E(3) – F(4) – G(5) – A(6) → Major 6th

Pair 5: C to B →

C(1) – D(2) – E(3) – F(4) – G(5) – A(6) – B(7) → Major 7th

Pair 6: C to C (octave) →

C(1) – ... – C(8) → Perfect 8th (or Octave)

✔ So for C major section, fill in:

> 4th, 5th, 3rd, 6th, 7th, 8th

*(Note: In interval naming, we usually say “Perfect 5th”, “Major 3rd”, etc., but since the worksheet only asks to “name the intervals” and gives “4th” as shorthand, you can use just the number + quality if needed — but here it seems they want the numeric name like “5th”, “3rd”, etc.)*

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## 🎼 PART 2: F MAJOR (Bottom note = F = 1)

F major scale:
F (1), G (2), A (3), Bb (4), C (5), D (6), E (7), F (8)

Again, count lines and spaces from F.

Let’s go pair by pair:

Pair 1: F to Bb →

F(1) – G(2) – A(3) – Bb(4) → Perfect 4th

*(In F major, B is flat, so F to Bb is a perfect 4th — same as C to F in C major.)*

Pair 2: F to C →

F(1) – G(2) – A(3) – Bb(4) – C(5) → Perfect 5th

Pair 3: F to A →

F(1) – G(2) – A(3) → Major 3rd

Pair 4: F to D →

F(1) – G(2) – A(3) – Bb(4) – C(5) – D(6) → Major 6th

Pair 5: F to E →

F(1) – G(2) – A(3) – Bb(4) – C(5) – D(6) – E(7) → Major 7th

Pair 6: F to F (octave) →

F(1) – ... – F(8) → Perfect 8th (Octave)

✔ So for F major section, fill in:

> 4th, 5th, 3rd, 6th, 7th, 8th

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## 📝 Final Answers:

C Major Section:

4th, 5th, 3rd, 6th, 7th, 8th

F Major Section:

4th, 5th, 3rd, 6th, 7th, 8th

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## 💡 Why This Works:

- Intervals are named by counting the letter names (including both notes) from the bottom up.
- In major keys, the intervals from the tonic (1st note) are:
- 1st → Unison
- 2nd → Major 2nd
- 3rd → Major 3rd
- 4th → Perfect 4th
- 5th → Perfect 5th
- 6th → Major 6th
- 7th → Major 7th
- 8th → Perfect 8th

So even though F major has a Bb, when counting from F to Bb, it’s still a 4th (F-G-A-Bb = 4 letter names), and because it’s in the key, it’s a *perfect* 4th.

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✔ You’re done! All intervals are correctly named based on their position from the root note in each key.