Page 95 - NUMINO_WB_5B
P. 95
053-P2-1
Basic Number Properties
Use Associative or Commutative Property to solve problems easily.
Associative Property
The way addends are grouped does not change the sum.
(3 8) 5 3 (8 5)
(2.4 1.2) 4.8 2.4 (1.2 4.8)
Commutative Property
The order of the addends does not change the sum.
129192
1.25 3.15 2.75 1.25 2.75 3.75
11.25 4.981 7.75
Step 1. Circle two numbers that can be easily added.
11.25 4.981 7.75
Step 2. Write the expression to solve the two numbers in Step 1.
11.25 4.981 7.75
Step 3. Solve the problem.
Basic Number Properties
Use Associative or Commutative Property to solve problems easily.
Associative Property
The way addends are grouped does not change the sum.
(3 8) 5 3 (8 5)
(2.4 1.2) 4.8 2.4 (1.2 4.8)
Commutative Property
The order of the addends does not change the sum.
129192
1.25 3.15 2.75 1.25 2.75 3.75
11.25 4.981 7.75
Step 1. Circle two numbers that can be easily added.
11.25 4.981 7.75
Step 2. Write the expression to solve the two numbers in Step 1.
11.25 4.981 7.75
Step 3. Solve the problem.
