Vocabulary
Factor
a number multiplied with another number to get the product
What is 7 x 4, if 4 x 7 =28
7 x 4 = 28
2 x 3 = 6, the 2 and 3 are called what?
factors
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What are the factors in this array?
4 and 8
product
The solution to the multiplication equation. The factors multiplies together
5 × 2 = 2 × _____. what is the missing number
5
5 x 5 = 25, the 25 is called what?
product
What strategy can you use to figure out 4's multiplication facts
double-double
Commutative Property
you can multiple the factors in any order to get the product
(8 x 2) x 10 (2 x 10) x 8 (10 x 8) x 2
__?__ x 10 ___?__ x 8 __?___ x 2
16, 20, 80
a x b = b x a, this is called what?
commutative property
Jane Doe has 2 hands with 7 rings on each finger. How many rings does she have all together?
70
Associative Property
you can group the factors in any combination to multiply using parenthesis
What are 2 ways to group the factors 5 x 2 x 8
(5 x 2) x 8
(2 x 8) x 5
(8 x 5) x 2
(a x b ) x c is called what
associative property
Carlos trains 8 weeks for a race. He runs 2 miles each day for 5 days each week. What is the total number of miles he runs?
80
solve ( 2 x 4 ) x 5
40
In this lesson, we learned ___?___ and ___?___ to multiply. (2 math words)
order and grouping