4 x 0 4 x 6 4 X 12
4 x 1 4 X 7
4 x 2 4 X 8
4 x 3 4 X 9
4 x 4 4 X 10
4 x 5 4 X 11
0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48
100
Ms. Thompson orders 3 boxes of pencils. Each box has 10 pencils. How many pencils did she order in all?
3 x 10 = 30
200
Use the RDW process to solve:
There are 8 bushes in front of the school. Each bush has 9 flowers on it. However, because of the cold of the winter, 22 of those flowers die. How many flowers are left?
8 x 9 = 72
72 - 22 = 50 flowers left
200
Use unit form to solve:
360 ÷ 4 = __________
360 ÷ 4 =
36 tens ÷ 4 = 9 tens
9 tens = 90
200
even x even = _________
even x odd = __________
odd x odd = ___________
Give an example to prove the rule.
even x even = even
even x odd = even
odd x odd = odd
200
6 x 0 6 x 6 6 X 12
6 x 1 6 X 7
6 x 2 6 X 8
6 x 3 6 X 9
6 x 4 6 X 10
6 x 5 6 X 11
0, 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72
200
Ms. Smith Pittman orders 4 boxes of erasers. Each box contains 4 erasers. She also orders 7 boxes of books. Each box contains 3 books. How many books and erasers will she receive all together?
4 x 4 = 16
7 x 3 = 21
16 + 21 = 37 books and erasers
or (4 x 4) + (7 x 3) = 16 + 21 = 37
300
Josh receives 5 cents for each can or bottle he recycles. How many cents does Brad earn if he recycles 48 cans and 32 bottles?
48 + 32 = 80
80 x 5 cents = 400 cents
300
I have 54 gifts to give out for the holidays. I have 6 friends and family members I want to give out gifts to. How many gifts does each friend/family member get?
54 ÷ 6 = 9 gifts per person
300
n x (m x 10) = (n x m) x 10
This formula demonstrates what property? Give an example.
That formula demonstrates the associative property. An example would be:
3 x (2 x 10) = (3 x 2) x 10
3 x 20 = 6 x 10 = 60
300
7 x 0 7 x 6 7 X 12
7 x 1 7 X 7
7 x 2 7 X 8
7 x 3 7 X 9
7 x 4 7 X 10
7 x 5 7 X 11
0, 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84
300
Ms. Thompson has been working hard to buy the Pride of 2024 an input-output machine so that cubs can better understand multiplication and division. She found this machine online and it computed:
Input Output
48 6
72 9
16 2
24 __
What is happening to the numbers inside the machine? Fill in the last blank.
The numbers are being divided by 8. The last blank is 3 because 24 divided by 8 equals 3.
400
Use unit form and an array to solve:
60 x 4 = ___________
60 = 6 tens
I have four rows of 6 tens.
I would bundle over twice to the hundreds place and have four tens left over.
6 tens x 4 = 24 tens = 240
400
Give the division fact for the following times tables:
7's
7 35 63
14 42 70
21 49 77
28 56 84
7 ÷ 7 = 1
14 ÷ 7 = 2
21 ÷ 7 = 3
28 ÷ 7 = 4
....
400
Explain why we solve parentheses first in a problem. Give an example of how your answer could change if you did not solve the parentheses first.
PEMDAS, please excuse my dear Aunt Sally (parentheses, exponents, multiplication, division, addition, subtraction).
For example:
(4 x 9) - 7 = 36 - 7 = 29
or: 9 - 7 = 2, so 4 x 2 = 8.
400
8 x 0 8 x 6 8 X 12
8 x 1 8 X 7
8 x 2 8 X 8
8 x 3 8 X 9
8 x 4 8 X 10
8 x 5 8 X 11
0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96
400
In the book store, Mrs. Cook Dwight buys 3 boxes of pens. Each box contains 2 bundles of 10 gray pens. Her friend buys 6 packs of pens. Each pack contains 10 black pens. Explain how the equation below shows how Mrs. Cook Dwight and her friend buy the same number of pens.
6 × 10 = 3 × 2 × 10
6 x 10 = (3 x 2) x 10
6 x 10 = 6 x 10
60 = 60
500
Use the break-apart strategy and associative property to solve:
30 x 9 = ______
30 x 9 = __________
30 = 10 x 3
(10 x 3) x 9 = _________
10 x (3 x 9) = _________
10 x 27 = 27 tens or 270
500
Ms. Thompson has 4 boxes of pencils. There are 6 pencils in each box. Of those pencils, Ms. T wants to give 3 pencils to each student. How many students get 3 pencils?
4 x 6 = 24
24 ÷ 3 = 8
8 students get 3 pencils
500
List 3 patterns we saw with our 9's times tables.
09 54
18 63
27 72
36 81
45 90
1. The ones place is decreasing by 1 while the tens place is increasing by 1.
2. When you add the tens place and ones place together, you get a sum of 9.
3. Your number of groups - 1 = the number in your tens place and 10 - the number of groups gives you your ones place. Ex: 9 x 3 = 27; 3 - 1 = 2 and 10 - 3 = 7.
4. Hand trick.
500
9 x 0 9 x 6 9 X 12
9 x 1 9 X 7
9 x 2 9 X 8
9 x 3 9 X 9
9 x 4 9 X 10
9 x 5 9 X 11
0, 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108
500
Ms. Dunn has 6 boxes of crayons. Each box has 9 crayons. As she passes out the crayons, she finds that 14 of them are broken and must be thrown away. How many crayons does she have at the end of the day?