What is Adding to Make 17?

S0-SA1-1290

Grade Level:

Pre-School – Class 2

All domains without exception

Definition

What is it?

Adding to Make 17 means finding different pairs of numbers that, when put together, give you a total of 17. It's about breaking down the number 17 into two smaller parts.

Simple Example

Quick Example

Imagine you have 17 laddoos. If you eat 10 laddoos, how many are left? You can think of it as 10 + what = 17. The answer is 7 laddoos are left (10 + 7 = 17).

Worked Example

Step-by-Step

Let's find one way to add numbers to make 17.
Step 1: Start with the number 17.
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Step 2: Pick any number smaller than 17. Let's pick 5.
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Step 3: Now, we need to find what number adds to 5 to make 17. We can write this as 5 + ? = 17.
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Step 4: To find the missing number, subtract 5 from 17: 17 - 5 = 12.
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Step 5: So, the missing number is 12.
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Step 6: Check your answer: 5 + 12 = 17. Yes, it's correct!
Answer: 5 + 12 = 17 is one way to add to make 17.

Why It Matters

Understanding how numbers combine and split helps you with basic calculations for everyday tasks, like managing money or understanding cricket scores. This skill is fundamental for careers in finance, engineering, and even cooking, where precise measurements are key.

Common Mistakes

MISTAKE: Confusing adding with subtracting, e.g., thinking 17 - 5 is the same as 5 + ? = 17. | CORRECTION: Remember 'adding to make' means finding a number to join with another to reach the total. Subtraction helps find the missing part.

MISTAKE: Only thinking of small numbers like 1 + 16 or 2 + 15. | CORRECTION: Remember to explore all possibilities, including larger numbers like 8 + 9 or 10 + 7.

MISTAKE: Forgetting that the order doesn't matter, e.g., thinking 5 + 12 is different from 12 + 5. | CORRECTION: Addition is commutative, meaning 5 + 12 gives the same sum as 12 + 5.

Practice Questions

Try It Yourself

QUESTION: If you have 8 mangoes, how many more do you need to have 17 mangoes in total? | ANSWER: 9

QUESTION: Find two different single-digit numbers that add up to 17. | ANSWER: 8 + 9 (or 9 + 8)

QUESTION: Your friend scored 7 runs in a cricket match. The team needs 17 runs to win. How many more runs does your friend need to score for the team to win? | ANSWER: 10 runs

MCQ

Quick Quiz

Which pair of numbers adds up to 17?

6 and 10

7 and 9

8 and 9

5 and 11

The Correct Answer Is:

8 + 9 equals 17. Options A (6+10=16), B (7+9=16), and D (5+11=16) all sum to 16, not 17.

Real World Connection

In the Real World

When you're buying vegetables at the local mandi and the vendor tells you the total is 17 rupees, you quickly calculate if your 10-rupee note and a 5-rupee coin are enough, or if you need to find another 2 rupees to make 17. This simple calculation helps you manage your daily transactions.

Key Vocabulary

Key Terms

ADDITION: The process of combining two or more numbers to find their total sum | SUM: The result of adding two or more numbers together | PART-WHOLE RELATIONSHIP: Understanding how smaller parts combine to form a larger whole | NUMBER BOND: A pair of numbers that add up to a specific total

What's Next

What to Learn Next

Great job understanding how to make 17! Next, you can explore 'Adding to Make 20' or 'Fact Families'. These concepts will build on your understanding of number relationships and help you become even faster with mental math.