Data

Copy and paste the text below. It is read-only. Select All

Commutative Property of Addition the order in which numbers are added does not change the sum- a+b=b+a Compatible Numbers Numbers that are close to the given numbers that make estimation or mental calculation easier 25+93+75=(25+75)+93 =100=93=193 Associative Property of Addition changing the groupings does not change the sum 17+(13+10)=(17+13)+10 Compensation adjust one number to make computations easier by changing the other number 320-190 +10 +10 330-200=130 combined joined together greater than When a number is larger than the other number. Example 65 > 56 less than When a number is smaller than the other number. Example 107 < 215 ordering to arrange numbers from least to greatest or greatest to least odd number A whole number ending with 1, 3, 5, 7, or 9 in the ones place. even number A whole number ending with 0, 2, 4, 6, or 8 in the ones place. prime number a number with only 2 factors....one and itself. square number a number that results from muliplyina another number by itself ex. 3 x 3 = 9 product the number from multiplication 2 x 3 =6 factor one of two or more numbers that are multiplied to form a product multiple counting by numbers. Example: the multiples of 6 are: 6, 12, 18, 24...... composite number A whole number greater than 1 that has more than 2 factors.