Solved Exercises on Counting to 100 Song Exercise in Grade 1

Master counting to 100: skip counting, number patterns, and counting songs through these 3 detailed exercises.

Solution: Exercises 1 to 3
1 Skip counting by 5s song
Exercise 1
Sing the counting by 5s song up to 100:
5, 10, 15, ..., 100
Definition:

Skip counting by 5s: Counting numbers in groups of 5: 5, 10, 15, 20, ...

Counting method:
  1. Start at 5
  2. Add 5 to each number to get the next
  3. Continue until reaching 100
Starting number
5
Pattern
+5
Ending number
100
Step 1: Start with 5

5 is the first multiple of 5

Step 2: Add 5 repeatedly

5 + 5 = 10, 10 + 5 = 15, 15 + 5 = 20, etc.

Step 3: Continue to 100

The sequence: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100

5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100
Final answer:

The counting by 5s song goes: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100

Applied rules:

• Skip counting: Add the same number repeatedly

• Multiples: These are multiples of 5

• Pattern recognition: Numbers end in 0 or 5

2 Skip counting by 10s song
Exercise 2
Sing the counting by 10s song up to 100:
10, 20, 30, ..., 100
Definition:

Skip counting by 10s: Counting numbers in groups of 10: 10, 20, 30, 40, ...

Starting number
10
Pattern
+10
Ending number
100
Step 1: Start with 10

10 is the first multiple of 10

Step 2: Add 10 repeatedly

10 + 10 = 20, 20 + 10 = 30, 30 + 10 = 40, etc.

Step 3: Continue to 100

The sequence: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100

10, 20, 30, 40, 50, 60, 70, 80, 90, 100
Final answer:

The counting by 10s song goes: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100

Applied rules:

• Skip counting: Add the same number repeatedly

• Multiples: These are multiples of 10

• Pattern recognition: Numbers end in 0

3 Counting to 100 by 1s song
Exercise 3
Sing the counting by 1s song up to 100:
1, 2, 3, ..., 100
Definition:

Counting by 1s: Counting each consecutive number: 1, 2, 3, 4, ...

Starting number
1
Pattern
+1
Ending number
100
Step 1: Start with 1

1 is the first natural number

Step 2: Add 1 repeatedly

1 + 1 = 2, 2 + 1 = 3, 3 + 1 = 4, etc.

Step 3: Continue to 100

The sequence: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ..., 99, 100

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ..., 99, 100
Final answer:

The counting by 1s song goes: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ..., 99, 100

Applied rules:

• Sequential counting: Each number is one more than the previous

• Natural numbers: These are the counting numbers

• Ordering: Numbers increase by 1 each time

Rules and methods, laws,...
Counting by 5s: 5, 10, 15, 20...
Skip Counting by 5s
Skip by 5s
5, 10, 15, 20, 25...
Pattern: +5
Skip by 10s
10, 20, 30, 40, 50...
Pattern: +10
Count by 1s
1, 2, 3, 4, 5...
Pattern: +1
Key Concepts and Strategies for Counting to 100
Count by 1s: 1, 2, 3, 4...
Sequential Counting
Key definitions:

Skip counting: Counting by adding the same number repeatedly (e.g., 2, 4, 6, 8...)

Multiples: Numbers that result from multiplying by another number

Number patterns: Sequences that follow a specific rule

Complete methodology:
  1. Identify the pattern: Recognize the interval (by 1s, 5s, 10s)
  2. Start at the beginning: Begin with the first number in the sequence
  3. Apply the rule: Add the interval to each number
  4. Continue until the end: Reach the target number (100)
Tip 1: Counting by 5s creates numbers ending in 5 or 0.
Tip 2: Counting by 10s creates numbers ending in 0.
Tip 3: Practice counting songs regularly to build fluency.
Tip 4: Use visual aids like number lines to support counting.
Common errors: Skipping numbers, forgetting the pattern, stopping before reaching 100.
Practice strategies: Sing counting songs, use manipulatives, count in rhythm.
Key concepts to remember:

• Counting by 1s: Each number increases by 1

• Skip counting by 5s: Each number increases by 5

• Skip counting by 10s: Each number increases by 10

• Patterns help predict the next number

Questions & Answers

Question: Why do we learn to count by 5s and 10s instead of just counting by 1s? It seems easier to count by 1s.

Answer: Great question! Learning to count by 5s and 10s helps in many ways:

  • Faster counting: It's quicker to count 5, 10, 15, 20 than 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
  • Understanding money: Pennies come in groups of 5 and 10 cents
  • Telling time: Clocks have marks every 5 minutes
  • Multiplication foundation: Skip counting prepares you for multiplication tables

Think of skip counting as taking shortcuts - it gets you to the same place faster!

Question: My child has trouble remembering where to start when singing counting songs. How can I help them remember?

Answer: Here are effective strategies to help your child remember starting points:

  • Visual cues: Use number lines or charts showing the starting point
  • Physical movement: Start counting while touching the starting number
  • Routine: Always begin with "We start at..." and the number
  • Patterns: Point out that counting by 5s starts at 5, by 10s starts at 10

Repetition and consistent starting routines help children internalize the patterns. Practice the same starting points daily until it becomes automatic.

Question: When I count by 5s, I sometimes get confused and say 5, 10, 15, 20, 30. Why do I skip 25?

Answer: This happens because counting by 5s creates a rhythmic pattern that can sometimes be interrupted. Here's how to stay on track:

  • Slow down: Don't rush through the sequence
  • Count on fingers: Use fingers to keep track of the count
  • Listen for the pattern: 5, 10, 15, 20, 25, 30 - each number ends in 5 or 0
  • Practice in chunks: Learn 5-25 first, then 30-50, etc.

Remember: after 20 comes 25 (not 30!), because you add 5 to 20. The pattern is: 5, 10, 15, 20, 25, 30, 35, 40...