Addition/Subtraction
The sum of 567 + 678
1,245
Estimate the product 14 x 8
80
Find the product 52 x 4
208
Ms. Lima is having a quiz. Monica scored 8 times as many points as Jason. Jason scored 78 points. Kathy scored 2 points less than Jason. How many points did Monica score?
8 x 78
624
A number that can be multiplied by another number to get a product is called a _______.
Factor
The difference of 680 - 542
138
Estimate the product 684 x 5
3,500
Find the product 67 x 9
603
Ms. Lima has 15 dogs and birds in total. She has 2 times as many dogs as birds. How many birds does she have?
5 birds
Found by breaking apart a factor into ones, tens, hundreds, and so on, and multiplying each of these by the other factor.
Partial Product
The sum of 6,998 + 5,432
1,2430
Find two estimates the product is between: 45 x 4
160 and 200
Find the product 418 x 5 using Distributive Property.
5 x (400+10+8)
(5 x 400) + (5 x 10) + (5 x 8)
2,000 + 50 + 40
= 2,090
Find the unknown number.
54 + n = 9 x 6
n = 0
Group factors in different ways, but your product will be the same
Associative Property
The difference of 8,000 - 768
7,232
Find two estimates the product is between: 864 x 7
5,600 and 6,300
Find the product using Partial Product: 246 x 3
6 x 3 = 18
6 x 40 = 240
6 x 200 = 1,200
1,200 + 240 + 14
= 1,454
The cost of c number of cars is $2500. If each car costs $50, what equation can be used to get the number of cars.
50 x c = 2,500
Multiply the factors in any order, and the product will be the same.
Commutative Property
The difference of 8,405 - 7,637
768
Find two estimates the product is between: 2,387 x 6
12,000 and 18,000
Find the product using Commutative Property and Associative Property: 4 x 26 x 5
1. Commutative Property
4 x 5 x 26
2. Associative Property
(4 x 5) x 26
= 20 x 26
= 520
Ms. Lima has 6 groups of students in her classroom. Each group sells b boxes of chocolate for a fundraiser. The class sold 240 boxes in total. How many boxes of chocolate did each group sell? What equation did you use?
6 x b = 240
b = 40
Multiplication factor is broken up into the sum of the two other multiplication factors.
Distributive Property