Multiplication facts
9 x 0
0
Newton and 5 of his friends each spend $7 on a board game. How much does the board game cost?
6 x $7 = $42
Write the addition equation as a multiplication equation.
8 + 8 + 8 + 8 = 32
4 x 8 = 32
What is the sum in a math equation?
What is the difference in a math equation?
Sum= the answer of an addition problem
Difference= the answer of a subtraction problem
You do 4 sit-ups on Monday and 8 sit-ups on Tuesday. Do you do an even or odd number of sit-ups in all?
4 + 8 = 12
12 = even
5 x 3
A summer jacket costs $10. A winter jacket costs 7 times as much as the summer jacket. Descartes has $68. Can he buy the winter jacket? Explain.
$70 > $68.
Descartes cannot buy the winter jacket. He does not have enough money.
Use equal groups to solve 4 x 9.
4 groups of 9 = 36.
In this multiplication equation, what is the factor and what is the product.
5 x 2 = 10
Factors = 5 and 2
Product = 10
You have 63 stamps. You use 45 of them to mail postcards. You buy 14 more stamps. How many stamps do you have now?
32
8 x 6
48
A principal is replacing whiteboards in a school. There are 9 classrooms. Each classroom has 4 whiteboards. Eight whiteboards do not need to be replaced. How many whiteboards does the principal need to replace?
A doctor tells you to drink 2 cups of water four times a day. How many cups of water should you drink in one week?
9 x 4 = 36
36 - 8 = 28
Using the Associative Property, find the missing factor in this equation.
(___ × 3) × 2 = 12
2
What is an array?
Give an example.
A groups of objects in equal rows and columns.
You have some coins. Your friend gives you 24 more coins. Now you have 72. How many coins did you have to start?
48
7 x 11
Newton has 4 bundles of balloons. There is 1 blue balloon, 3 purple balloons, and 2 green balloon in each bundle. How many balloons does he have in all?
24
How can I use the Distributive Property to solve this equation?
3 x (5+2)
I can distribute the 3 to the 5 and the 2.
3 x 5 + 3 x 2 = 15 + 6 = 21
What is a multiple?
The product of a number and any other counting number.
You have 3 nickels, 4 dimes, and 3 pennies. You want to buy candy for 60 cents. Will you have enough money? If not, how much more money do you need?
15 + 40 + 3 = 58 cents
You need 2 more cents.
Which equation is true?
A. 2 × 0 = 2 + 1
B. 7 + 0 = 7 × 0
C. 10 + 0 = 10 × 1
D. 5 + 1 = 5 × 1
C. 10 = 10
You find 3 four-leaf clovers and 6 three-leaf clovers. What is the total number of leaves on the clovers you find?
3 x 4 = 12
6 x 3 = 18
12 + 18 = 30
Use a tape diagram to model 5 groups of 6.
5 groups of 6 = 30.
What is the Commutative Property of Multiplication? Give an example.
Changing the order of factors does not change the product. The "flip-flop" property.
Example= 4x3 and 3x4
Divide 12 counters into 4 equal groups. How many counters are in each group?
3