Mathematics
Grade 1
15 min
Make a number using subtraction - numbers up to 10
Make a number using subtraction - numbers up to 10
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1
Introduction & Learning Objectives
Learning Objectives
Identify that subtraction can be used to make a smaller number.
Create a subtraction sentence that equals a given number from 1 to 10.
Find the missing number in a subtraction problem like 7 - ? = 4.
Use pictures or objects to model how to make a number with subtraction.
Write multiple subtraction equations for the same target number.
Explain their subtraction strategy using simple words.
You have 8 yummy strawberries 🍓. How many can you eat to have 5 left for your friend?
Today, we will learn a fun trick! We can use subtraction to make any smaller number we want. This helps us solve puzzles and share things fairly.
Real-World Applications
Sharing snacks with a friend.
Giving away some of your toys.
Figuring out how many pages are left to read i...
2
Key Concepts & Vocabulary
TermDefinitionExample
SubtractionTaking away some things from a group to see what is left. It makes the number smaller.You have 5 balls ⚽⚽⚽⚽⚽. You give 2 away. You have 3 left. That's subtraction!
Minus Sign (-)This is the minus sign. It tells us to subtract or take away.The sign in 5 - 2 = 3 is the minus sign.
Equals Sign (=)This sign means 'is the same as'. It shows the final answer.In 5 - 2 = 3, the equals sign shows that 5 minus 2 is the same as 3.
DifferenceThe answer you get when you subtract. It's the number that is left over.In 8 - 3 = 5, the number 5 is the difference.
Number SentenceA math problem written with numbers and signs.7 - 1 = 6 is a complete number sentence.
Starting NumberThe bigger number you begin with before you take any away.In 9 - 4 = 5,...
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Core Formulas
Subtraction Sentence Structure
Starting Number - Take Away Number = Difference
Always start with the bigger number. Then, subtract the number you are taking away to find what is left.
Finding the 'Take Away' Number
Starting Number - Difference = Take Away Number
If you know where you start and where you want to end, you can find how many to take away.
4 more steps in this tutorial
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Challenging
You want to make the number 4. You can start with 10, 9, or 8. Which subtraction sentence uses the BIGGEST 'take away' number?
A.8 - 4 = 4
B.9 - 5 = 4
C.4 - 0 = 4
D.10 - 6 = 4
Challenging
I start with a number, take away 3, and make 5. Then, I start with the SAME number but take away 4. What number do I make now?
A.4
B.5
C.8
D.3
Challenging
Which sentence is ALWAYS true when you make a number using subtraction?
A.The starting number is always 10.
B.You always take away an even number.
C.The answer is always smaller than the starting number.
D.The answer is always bigger than the number you take away.
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