Mathematics
Grade 1
15 min
Subtracting 5
Subtracting 5
Tutorial Preview
1
Introduction & Learning Objectives
Learning Objectives
Subtract 5 from any number between 5 and 10.
Subtract 5 from any number between 11 and 20.
Use a number line to count back 5.
Draw pictures to solve subtraction problems with 5.
By the end of of this lesson, students will be able to solve word problems that involve taking away 5.
Recognize the minus sign (-) and understand it means to subtract.
You have 8 yummy cupcakes 🧁. You give 5 to your friends. How many are left for you?
Today, we will learn a special skill: subtracting the number 5! We will use our fingers, drawings, and number lines to become 'minus 5' experts.
Real-World Applications
Sharing 5 toys with a friend.
Eating 5 grapes from a bunch.
Spending 5 coins to buy a sticker.
Seeing 5 birds fly away from a tree.
2
Key Concepts & Vocabulary
TermDefinitionExample
SubtractTo subtract means to take some things away from a group.If you have 6 balls ⚽ and you subtract 5, you take 5 balls away.
Minus Sign (-)This little line is the minus sign. It tells us to subtract!The problem 7 - 5 = 2 uses a minus sign.
DifferenceThe difference is the answer you get when you subtract.In 9 - 5 = 4, the number 4 is the difference.
Take AwayThis is another way to say subtract. You take things away.10 take away 5 is 5.
How many are left?This question asks for the answer after you subtract.You have 8 fish 🐠. 5 swim away. How many are left? The answer is 3.
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Core Formulas
Counting Back Rule
N - 5 = Count back 5 steps from N
Start at the bigger number and count backwards 5 times to find the answer.
Using Your Hand Rule 🖐️
N - 5 = Put N fingers up, then put one whole hand down.
This is a quick way to subtract 5 from numbers up to 10.
Number Line Hops
Start at N, then hop ← 5 times.
Find your starting number on a number line and make 5 hops to the left.
4 more steps in this tutorial
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Challenging
I am thinking of a number. When I subtract 5 from my number, the answer is 9. What number am I thinking of?
A.4
B.9
C.14
D.5
Challenging
Leo has 17 toy cars. He gives 5 to his brother. He wants to have 15 cars in total. How many more cars does he need to get?
A.3
B.12
C.15
D.5
Challenging
Which number sentence is TRUE?
A.13 - 5 = 7
B.18 - 5 = 12
C.11 - 5 = 9 - 3
D.15 - 5 = 5 + 6
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