Facts
Solve.
2 x 2 =
3 x 3 =
4 x 4 =
5 x 5 =
6 x 6 =
7 x 7 =
9
16
25
36
49
Solve.
10 x 40 =
30 x 900 =
600 x 500 =
400
27,000
300,000
In a classroom there are 5 tables. 4 students sit at each table. How many total students are there?
5 x 4 = 20 students
Write the multipplcaiton fact that this array represents:
X X X X X X X
X X X X X X X
X X X X X X X
7 x 3 = 21
Solve.
2 x 5 x 4 =
40
Write the facts for this fact family: 4, 6, 24
4 x 6 = 24
6 x 4 = 24
24 / 4 = 6
24 / 6 = 4
Explain how to solve this problem using mental math:
30 x 400 =
Answers may vary; 12,000
Ms. Oster drinks 3 cups of coffee a day. How many cups of coffee does she drink in a week?
3 x 7 = 21 cups of coffee
Draw an array to represent 5 x 4 and find the answer.
20
X X X X X
X X X X X
X X X X X
X X X X X
10 x 3 x 4 =
120
Find the missing factor.
6 x ___ = 18
___ x 10 = 50
2 x ____ = 12
3
5
6
2 x ___ = 20
2 x ___ = 200
2 x ___ = 2,000
10
100
1,000
You and three friends are sharing a pizza. You cut the pizza into 16 pieces. How many pieces should each friend get in order to make sure everyone gets the same amount?
16 / 4 = 4 pieces
Larry drew an array to show 6 x 7. Is he correct? Why or why not?
X X X X X X X
X
X
X
X
X
Solve this problem using TWO different ways.
10 x 4 x 6 =
Solve.
12 / 4 =
15 / 5 =
30 / 6 =
40 / 5 =
3
3
5
8
There are 40 markers in a box. There are 100 boxes. How many total markers are there in all?
40 x 100 = 4,000 markers
Explain how you know if you should use multiplication or division to solve a word problem.
2. Key words for multiplication: total, in all, altogether, times, how many
3. Key words for division: each, same, divide, split, how many times more
Rick is baking cookies. He has two pans of 4 x 3 arrays of cookies. How many total cookies is he baking?
x x x x x x
x x x x x x
x x x x x x
x x x x x x
12 + 12 = 24 cookies
What does product mean?
The answer to a multiplication problem.
Explain how you can use the multiplication chart to find the answer to a multiplication or division problem.
Answers may vary
A farmer is planting watermelon seeds. He plans 60 rows of seeds with 80 seeds in each row. How many total watermelon seeds does he plant?
60 x 80 = 4,800 watermelon seeds
Miss DellaVecchia has 22 students in her new class, if she gives each of them 4 lollipops... How many lollipops does she give out in all?
88 lollipops.
Use the array to help you find the missing factor
35 / 7 =
X X X X X X X
X X X X X X X
X X X X X X X
X X X X X X X
X X X X X X X
5
What does quotient mean?
The answer to a division problem.