What is Skip Counting by 10s?

S0-SA1-0049

Grade Level:

Class 1

Maths, Place Value

Definition

What is it?

Skip counting by 10s means counting numbers by adding 10 each time, instead of adding 1. You start from a number and jump forward by 10 to find the next number in the sequence. It's like taking steps of 10 on the number line.

Simple Example

Quick Example

Imagine you are collecting ₹10 notes for your pocket money. If you start with ₹0, then you get ₹10, then ₹20, then ₹30, and so on. You are skip counting by 10s: 0, 10, 20, 30, 40...

Worked Example

Step-by-Step

Let's skip count by 10s starting from 5.

1. Start with the given number: 5
---2. Add 10 to the starting number: 5 + 10 = 15
---3. Add 10 to the new number: 15 + 10 = 25
---4. Add 10 to the next number: 25 + 10 = 35
---5. Continue adding 10 to find more numbers: 35 + 10 = 45, 45 + 10 = 55
---Answer: The sequence when skip counting by 10s from 5 is 5, 15, 25, 35, 45, 55, and so on.

Why It Matters

Skip counting by 10s builds a strong foundation for understanding place value and multiplication. It helps you quickly calculate totals and understand number patterns. This skill is useful for careers like business management, where you track inventory in batches of 10, or in finance, for quickly estimating costs.

Common Mistakes

MISTAKE: Adding 1 instead of 10 after the first jump (e.g., 10, 20, 21, 22...) | CORRECTION: Always add exactly 10 to the previous number to get the next number in the sequence.

MISTAKE: Changing the starting number in the middle of the sequence (e.g., 5, 15, 20, 30...) | CORRECTION: The starting number sets the pattern, but the 'skip' or 'jump' amount (which is 10 here) must remain constant.

MISTAKE: Confusing skip counting by 10s with counting by 1s (e.g., 1, 2, 3, 4...) | CORRECTION: Remember, skip counting by 10s means each jump is a big step of ten, not small steps of one.

Practice Questions

Try It Yourself

QUESTION: What are the next three numbers if you skip count by 10s starting from 40? | ANSWER: 50, 60, 70

QUESTION: If a shopkeeper sells samosas in packs of 10, and he has already sold 3 packs, how many samosas has he sold in total? What will be the total after selling 2 more packs? | ANSWER: 30 samosas; 50 samosas

QUESTION: Start at 7. Skip count by 10s five times. What number do you land on? | ANSWER: 57

MCQ

Quick Quiz

Which sequence shows skip counting by 10s starting from 12?

12, 13, 14, 15

10, 20, 30, 40

12, 22, 32, 42

12, 20, 30, 40

The Correct Answer Is:

Option C correctly adds 10 to each previous number (12+10=22, 22+10=32, 32+10=42). Other options either add 1, start from a different number, or don't consistently add 10.

Real World Connection

In the Real World

Imagine you are a cashier at a grocery store and need to count ₹10 coins quickly. Instead of counting 1, 2, 3..., you group them into sets of 10 and count 10, 20, 30, 40... This helps you count money much faster and more accurately, especially when dealing with large amounts.

Key Vocabulary

Key Terms

SKIP COUNTING: Counting by a number other than one. | SEQUENCE: An ordered list of numbers. | PLACE VALUE: The value of a digit based on its position in a number. | ADDITION: The process of combining numbers.

What's Next

What to Learn Next

Now that you understand skip counting by 10s, try learning 'What is Skip Counting by 5s?' or 'What is Skip Counting by 2s?'. These concepts will further strengthen your understanding of number patterns and prepare you for multiplication.