What is Skip Counting by Twelves?

S0-SA1-0774

Grade Level:

Pre-School – Class 2

All domains without exception

Definition

What is it?

Skip counting by twelves means counting forward by adding 12 each time to the previous number. It's like taking a 'jump' of 12 steps on the number line repeatedly, starting from a certain number.

Simple Example

Quick Example

Imagine you have 12 ladoos in one box. If you have another box, you'll have 12 + 12 = 24 ladoos. If you get a third box, you'll have 24 + 12 = 36 ladoos. You are skip counting by twelves: 12, 24, 36, and so on.

Worked Example

Step-by-Step

Let's skip count by twelves, starting from 0, for the first five numbers.

STEP 1: Start with 0. Add 12. So, 0 + 12 = 12.
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STEP 2: Take the last number, 12. Add 12 to it. So, 12 + 12 = 24.
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STEP 3: Take the last number, 24. Add 12 to it. So, 24 + 12 = 36.
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STEP 4: Take the last number, 36. Add 12 to it. So, 36 + 12 = 48.
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STEP 5: Take the last number, 48. Add 12 to it. So, 48 + 12 = 60.

ANSWER: The first five numbers when skip counting by twelves from 0 are 12, 24, 36, 48, 60.

Why It Matters

Skip counting helps you understand multiplication tables faster and build a strong number sense. It's useful in careers like finance for calculating monthly budgets, in logistics for counting items in batches, or even in event planning for arranging chairs in groups.

Common Mistakes

MISTAKE: Adding a different number instead of 12 at each step. For example, doing 12, 24, 35, 47... | CORRECTION: Always add exactly 12 to the previous number to continue the sequence correctly.

MISTAKE: Forgetting to add the carry-over when adding 12. For example, 24 + 12 = 34 instead of 36. | CORRECTION: Practice your basic addition skills, especially with numbers that require carrying over digits.

MISTAKE: Starting from the wrong number. For example, if asked to start from 12, starting from 0. | CORRECTION: Always read the question carefully to know the starting number for the skip counting sequence.

Practice Questions

Try It Yourself

QUESTION: What are the next three numbers if you skip count by twelves starting from 60? | ANSWER: 72, 84, 96

QUESTION: If a factory packs 12 pens in one box, how many pens are there in 7 boxes? (Hint: Skip count by twelves 7 times starting from 0) | ANSWER: 84 pens

QUESTION: Rakesh saves Rs. 12 every week. If he starts with Rs. 50, how much money will he have after 4 weeks? | ANSWER: Rs. 98 (50 + 12 + 12 + 12 + 12 = 98)

MCQ

Quick Quiz

Which sequence shows skip counting by twelves?

10, 20, 30, 40

12, 24, 36, 48

12, 22, 32, 42

1, 12, 24, 36

The Correct Answer Is:

Option B correctly shows adding 12 to each previous number (12+12=24, 24+12=36, 36+12=48). The other options add 10, 10, or different numbers respectively.

Real World Connection

In the Real World

In India, when shopkeepers buy items in bulk, like 12 pencils in a dozen, they often use skip counting to quickly figure out total quantities or costs. For example, if one dozen pencils cost Rs. 60, then two dozens cost Rs. 120, three dozens Rs. 180, and so on.

Key Vocabulary

Key Terms

Skip Counting: Counting by adding a fixed number each time | Sequence: A list of numbers that follow a pattern | Pattern: A regular and repeatable way in which something happens or is done | Multiple: The result of multiplying a number by an integer

What's Next

What to Learn Next

Great job understanding skip counting by twelves! Next, you can explore skip counting by other numbers like thirteens or fifteens. This will make you even better at multiplication and mental math.