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Addition and subtraction

How to use addition--Beginner

First pick two numbers.


Then write them down on your piece of paper. Then put a sign between the two numbers that looks like +. Your numbers should look like number1 + number2.


Now you need to learn to count. the very basics are 0 1 2 3 4 5 6 7 8 9 10. Or in word form it is
zero one two three four five six seven eight nine ten


then you need to add your two numbers, Here is how you do it. take your two numbers and then lets say your numbers are both 1. now if you put two ones together it makes 2. because of the counting 1 and 1 is 2. Because one will always make the first number go up by 1. so if your number is 2 + 1 it equals 3 because 3 is 1 more than two.


Now lets say it is a two insted of a one. Then you would make the first number go up by two. so lets say your numbers are 3 + 2, That would be 5 because 5 is two more than 3.


Now can you guess if the number is 3? If you did good job! The number would go up by 3. Example: 5 + 3 = 8. Because 3 more than 5 is eight. now I think you know how to do all the rest of the numbers. like 3 + 4 = 7 That would be 7 because 7 is four more than three.

Challange

What is 4 + 6?

How to use suptraction--Beginner

(reccomended if you know addition)

First pick two numbers and the first number is bigger than the second number


than write your two numbers and put a - sign between them. It should look like this: number1 - number2.


Then you need to subtract your numbers. Here is how you do it. Take your two numbers and then take the first number and count down by your second number. So lets say i am doing 3 - 2 I would look at my counting, count down by two So 3 Take away one then i have 2 then take away one more and then i have 1 and that is your awnser!


So another way to use subtraction is counting up. Sounds but in some cases it is better. So how you do it is have the bigger number on the left and have the smaller number on the right. then you count up from the smaller number until you get to the bigger number. Example: 2 - 8 So what you would do is count from two to eight. So you would count 3 4 5 6 7 8. There and then count how many numbers it took to count to the larger number and you are done! (You start at one number higher than the number)


Examples:

8 - 2 = 6


7 - 4 = 3


8 - 8 = 0

Challange

What is 9 - 5 + 2

Summary of what you have learned so far

How to use addition

How to count

How to use 2 ways of subtraction

Good job!

Counting

How to count-- Beginner

Now this wont be the funnest lesson ever so stay with me


So now with the counting, oviously 0 1 2 3 4 5 6 7 8 9 10 now 11 12 13 14 15 16 17 18 19 20. Noticing a pattern? 21 22 23 24 25 26 27 28 29 30. Now you probubly notice a pattern Eatch time the number on the left gets bigger every ten numbers. Can you guess the next set?


31 32 33 34 35 36 37 38 39 40. See, The number on the left gets bigger every time. But the number on the right always counts 1 2 3 4 5 6 7 8 9 10. The number on the right never goes past 9. But the number on the left cant pass 9 either.


So you are probubly woundering what happenes when the number goes past 99. Well what happenes will be for a later lesson.


Challange

See if you can count all the way to 50.

You use your keyboard to type in numbers

How to count in word form--Begginer

This will also be pretty boring so lets get going

One, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen, twenty, twenty one, twenty two, twenty three, twenty four, twenty five, twenty six, twenty seven, twenty eight, twenty nine, thirty, thirty one, thirty two, thirty three, thirty four, thirty five, thirty six, thirty seven, thirty eight, thirty nine, fourty, fourty one, fourty two, fourty three, fourty four, fourty five, fourty six, fourty seven, fourty eight, fourty nine, fifty!

Half way there!

fifty one, fifty two, fifty three, fifty four, fifty five, fifty six, fifty seven, fifty eight, fifty nine, sixty, sixty one, sixty two, sixty three, sixty four, sixty five, sixty six, sixty seven, sixty eight, sixty nine, seventy, seventy one, seventy two, seventy three, seventy four, seventy five, seventy six, seventy seven, seventy eight, seventy nine, eighty

There is a pattern. can you see it?

Eighty one, eighty two, eighty three, eighty four, eighty five, eighty six, eighty seven, eighty eight, eighty nine, nintey, nintey one, nintey two, nintey three, nintey four, nintey five, nintey six, nintey seven, nintey eight and finnaly nintey nine!

The pattern is there is just the number with ty at the end. like eighTY and fifTY. this is the case exept for nintey


Challange

Count to fifty in word form.

Summary of what you have learned so far.

A good understanding of how to count in aribic numbers and in word form.

Good job!

Counting v2

How to use hundreds in counting--Begginer

Hundreds are when a number goes over 99. When a number goes over 99 it is called a hundred. A hundred looks like this: 100 or one hundred.


then the counting system works as normal it goes to 101 then 102 and in word form it would go: one hundred one, one hundred two, And so on.


when a number goes over 199 it goes to 200 or two hundred. This pattern repeats until it goes to 999 or Nine hundred nintey nine. What happenes for after 999 is for a later lesson.


Challange

What is 58 + 43?


Challange 2

what is 158 + 110?


Challange 3

What would 382 Be in word form?

Summary of learnings

How to count up to 999 in word form and in numeric form!

Good job!

stratigies for addition

Standard algorythm--Begginer

Counting with fingers wont do anymore for addition. Lets learn a new method to do. it easy.


Standard algorythm is my personal favorite. So lets get started of how to draw it. It should look like this:
2|2
+ 7|4


Then how to do it is add each one in each column. So 2 + 4 is 6 and 7 + 2 is 9 So now it should look like
2|2
+ 7|4
9 6


.

but if the comumn goes over 10 you add one to the next column.
1
|7|5
+ |1|8
9 3


Challange

what is 183 + 294?

Summary of learnings so far

How to use standard algorythm to do addition

Good job!

Stratigies for subtraction