Addition Properties and Subtraction Rules

1
Addition Properties and Subtraction Rules

• Zero Property
• Commutative Property
• Associative Property

• Zeros in Subtraction

2
Zero Property

• When you add zero to a number, the sum is that
  number.
• Anything plus zero is that number

• 707
• 505
• 011
• 98098
• 01,5231,523
• 30?
• 0568?

3
Commutative Property

• When you change the order of the addends, the sum
  stays the same.
• When you add a number to another number, then
  switch the order, they will equal the same.

• 5712
• 7512
• 14216
• 21416
• 235
• 325

4
Associative Property

• When you change the way addends are grouped, the
  sum stays the same.

• (35)63(56)
• 8 63 11
• 14 14

5
Zeros in Subtraction

• When you subtract zero from a number, the
  difference is that number.
• When you subtract a number from itself, the
  difference is zero.

• 7-07
• 12-012
• 142-0142
• 7-70
• 23-230
• 145-1450

6
Which Property is shown below?Zero, Commutative,
Associative or Zeros in Subtraction

• 120____
• Zero Property
• 25(63)(256)___
• Associative Property

• (2-0)4____4
• Zeros in Subtraction
• 1925____19
• Commutative Property