math
Grade 1 - Adding and subtracting

Grade 1 lesson

1 - Adding and subtracting


Hello! A very warm welcome on this website!

Adding

Doing an addition is adding a number to another number. For instance :

1 + 1 = 2
1 + 4 = 5
7 + 2 = 9

When you add 1 to the number 1 you get 2, when you add 4 to the number 1 you get 5, when you add 2 to the number 7 you get 9.

Train yourself!
What is the value of 9 + 7 ?


Subtracting

Doing a subtraction is taking away a number from another number. For instance :

5 - 1 = 4
7 - 2 = 5
9 - 4 = 5

When you take away 1 from the number 5 you get 4, when you take away 2 from the number 7 you get 5, when you take away 4 from the number 9 you get 5.


Go on training yourself!
What is the value of 8 - 8 ?




>>> Lesson about multiplying >>>


Adding and subtracting

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