3.NBT.3
3.OA.1
3.OA.9
Word Problems
Properties of Multiplication
100
2 x 40
80
100
Model 3 groups of 5
Students should have three groups with 5 objects in each group
100
What pattern is shown on the chart?
Increase by 3
Add 3
100
Mrs. Holmes puts 2 chocolate chip cookies and 3 peanut butter cookies in a bag. She gave 10 bags to her students. How many cookies did she give to her students?
50 cookies.
100
Show how you know that 2 x 7 and 7 x 2 have the same product.
Commutative property of multiplication
Draw 2 groups with 7 objects and 7 groups with 2 objects
200
3 x 60
180
200
Model 2 x 6
Students should have 2 groups with 6 objects in each
200
What pattern do you see?
Increase by 6
Add 6
All Even
200
Mrs. Holmes had 16 students in her class. She broke her class into 8 groups to do projects. How many students were in each group?
2 students
200
What property says that you can multiply factors in any order and get the same product?
Commutative Property of Multiplication
300
Which shows 3×30?
a. 3 groups of 3 tens
b. 3 groups of 30 ones
c. 30 groups of 3 ones
d. 9 groups of 10 ones
b. 3 groups of 30 ones
300
Which two expressions does the model represent?
a. 5x4
b. 5+4
c. 4+4+4+4+4
d. 4x5
A and C
300
What are the two missing numbers?
30 and 42
300
The cafeteria has 8 tables with 9 seats at each table. How many students can eat in the cafeteria?
45 students
300
Which property does the following equation show?
3 x 7 = (3 x 3) + (3 x 4)
A. Zero Property
B. Commutative Property
C. Associative Property
D. Distributive Property
D
400
7 x 60
420
400
Which multiplication equation does the array represent?
A. 4 x 6=10
B. 4 x 6=24
C. 6 x 4=10
D. 6 x 4=24
B. 4 x 6=24
400
How do you know 34 + 66 has the same sum as
30 +70?
If you take 4 away from 34 and add it to 66, you will have 30 + 70.
400
The third grade had jump ropes. Mrs. Holmes's class had 6 jump ropes. Mr. Elm's class had 4 jump ropes. Mrs. Turco's class had 3 jump ropes. Ms. Majewski's class had 5 jump ropes. Each jump rope had two handles. How many jump rope handles did third grade have?
36 jump rope handles
400
Which property does the following equation show?
(2x3)x4 = 2x(3x4)
A. Zero Property
B. Commutative Property
C. Associative Property
D. Distributive Property
C. Associative Property
500
If you have 6 boxes, and each box contains 50 stickers, how many stickers do you have in total?
a. 300
b. 250
c. 350
d. 400
300
500
Mrs. Holmes has a bookshelf with 3 shelves. Each shelf holds 7 books. How many books does Mrs. Holmes have? Model your equation.
21 books
Must have appropriate model
500
How do you know 35 + 95 has the same sum as
30 + 100?
If you take 5 from 35 and add it to 95, you have
30 + 100.
500
Three farmers had momma pigs. The first farmer had 3 pigs. The second farmer had 5 pigs. The third farmer had 7 pigs. Each pig had 4 piglets. How many piglets did the farmers have altogether?
60 piglets
500
Paula is trying to multiply 3 x 5 x 6. Which numbers should she multiply first? Why?
Either 3x5 or 5x6 with a reasonable explanation.