easy math

why does 1+2=3

• you have to add one to two

• you have to add two to two

• you have to add three to two

• you have to add five to two

why does 4+4=8

• you have to add four to four

• you have to add three to four

• you have to add two to four

• you have to add one to four

why does 5+5=10

• you have to add five to five

• you have to add four to five

• you have to add three to five

• you have to add two to five

1,000+10,000

• 11,000

• 12,000

• 13,000

• 14,000

9,000-2,000

• 4008

• 3005

• 7,000

• 2900

1x56

• 56

• 57

• 54

• 53

1+1+1+1

• 4

• 5

• 3

• 2

9-5

• 4

• 2

• 3

• 1

5-8

• 3

• 4

• 2

• 1

10x3

• 30

• 40

• 20

• 60