What is Making Up?

S0-SA4-0812

Grade Level:

Pre-School – Class 2

All domains without exception

Definition

What is it?

Making Up, in simple terms, means finding the difference between two numbers by adding to the smaller number until you reach the larger number. It's like counting up from one number to another to see how much is in between them.

Simple Example

Quick Example

Imagine you have 5 cricket stickers, but you want to collect 10 stickers for your album. To find out how many more stickers you need, you can 'make up' from 5 to 10. You would count: 6, 7, 8, 9, 10. That's 5 more stickers needed.

Worked Example

Step-by-Step

PROBLEM: You have saved ₹40 for a new storybook that costs ₹75. How much more money do you need to save?

1. Start with the money you have: ₹40.
2. We need to reach the book's cost: ₹75.
3. Let's add in steps to reach ₹75 from ₹40.
4. Add ₹10 to ₹40: ₹40 + ₹10 = ₹50.
5. Now we have ₹50. Add another ₹10: ₹50 + ₹10 = ₹60.
6. Now we have ₹60. Add another ₹10: ₹60 + ₹10 = ₹70.
7. Now we have ₹70. Add ₹5 to ₹70: ₹70 + ₹5 = ₹75.
8. Total money added: ₹10 + ₹10 + ₹10 + ₹5 = ₹35.

ANSWER: You need to save ₹35 more.

Why It Matters

Understanding 'making up' helps you quickly solve problems involving change, missing amounts, or differences in everyday life. This skill is crucial in careers like shopkeeping, banking, and even managing your pocket money, as it helps you calculate quickly without a calculator.

Common Mistakes

MISTAKE: Subtracting the smaller number from the larger number directly without understanding the 'counting up' process. | CORRECTION: While subtraction gives the same answer, 'making up' is a mental math strategy. Practice counting up in your head or on your fingers to build this skill.

MISTAKE: Starting the count from the larger number instead of the smaller number. | CORRECTION: Always start counting UP from the smaller number until you reach the larger number.

MISTAKE: Forgetting to count the numbers you add. | CORRECTION: Keep track of each step or jump you make. For example, if you go from 5 to 10, count 'one, two, three, four, five' as you say 6, 7, 8, 9, 10.

Practice Questions

Try It Yourself

QUESTION: Your friend has 12 colourful marbles. You have 8. How many more marbles does your friend have than you? | ANSWER: 4 marbles (Count up from 8: 9, 10, 11, 12 - that's 4 steps)

QUESTION: A bus ticket costs ₹30. You have ₹17. How much more money do you need to buy the ticket? | ANSWER: ₹13 (Count up from 17: 17 + 3 = 20, 20 + 10 = 30. So, 3 + 10 = 13)

QUESTION: Your elder sister is 16 years old. You are 9 years old. How many years older is your sister than you? | ANSWER: 7 years (Count up from 9: 10, 11, 12, 13, 14, 15, 16 - that's 7 years)

MCQ

Quick Quiz

You need 25 stickers for a game. You already have 18 stickers. How many more stickers do you need to 'make up' to 25?

The Correct Answer Is:

To make up from 18 to 25, you count: 19, 20, 21, 22, 23, 24, 25. That is 7 steps. So, you need 7 more stickers.

Real World Connection

In the Real World

When you pay for groceries with a ₹100 note and the bill is ₹78, the shopkeeper often 'makes up' the change. They might give you ₹2 to reach ₹80, then ₹20 to reach ₹100. This mental calculation helps them quickly give you the correct change.

Key Vocabulary

Key Terms

DIFFERENCE: The result of subtracting one number from another. | COUNTING UP: Starting from a smaller number and adding until you reach a larger number. | MENTAL MATH: Doing calculations in your head without writing them down. | MISSING AMOUNT: The quantity needed to complete a set or reach a target.

What's Next

What to Learn Next

Once you're comfortable with 'making up', you can explore basic subtraction and addition with larger numbers. This foundation will make understanding concepts like borrowing in subtraction much easier.