EnVision Math

Topic 3:

Lesson 3-1

Meaning of Multiplication

2010-11

Ryan A. & Chelsie Meadow & Allison

Maryah & Jayla Ryan V. & Brandon

Ariana & Elijah Cameron & Jadyn

Matthew, Nicholas

Mikayla & Chase

Mrs. Gibson Allison M.CameronBrandonRyan V.ChaseMatthewElijahMaryah

Miss RobinsonMikaylaJaylaJadynSaulRyan A.

Ms. FechoChelsieMeadowNicholasAriana

Marcy used blocks to build a wall 6 blocks wide and 4 blocks high.

How many total blocks did she use?

4 x 66 + 6 + 6 + 6 = 24

= 24

How can multiplicatio

n be used when equal groups are combined?

How many blocks would you need to build a wall that is 5 blocks wide

and 3 blocks high?

3 x 5 = 155 + 5 + 5 = 15

3 x 5 = 15

productfactors

the number of groups

3 x 5 = 153 x 5 = 15

the number of items in each

group

3 x 5 = 15

5 + 5 + 5 = 15

5 x 3 = 15

3+3+3+3+3=15

2 x 5 = 10

5 + 5 = 10

3 x 3 = 9

3 + 3 + 3 = 9

3 x 6 = 18

6 + 6 + 6 = 18

6 x 2 = 122 + 2 + 2 + 2 + 2 + 2 = 12

3 + 3 + 3 + 3 = 124 x 3 = 12

5 + 5 + 5 + 5 + 5= 255 x 5 = 25

8 + 8 + 8 = 243 x 8 = 24

Beth saw 2 groups of 4 moths. Draw a picture to show 2 groups of 4.

Then draw an array to show 2 x 4.

Rudi and Eva collect plastic frogs. Rudi collected 5 frogs. Eva collected 3 times as many frogs. How many frogs

did Eva collect?

3 x 5 =15 frogs

Rudi’s frogs Eva’s frogs

Martha has 5 rubber ducks. Jim has twice as many rubber ducks. How many rubber ducks does Jim have?

2 x 5 =

10 rubber ducks

Martha’s ducks Jim’s ducks

multiplication

7 x 2 = 14 miles

per

Topic 3:

Mr. O’Neil formed 6 teams in his first gym class. He put 4 students on each team. How many students were in Mr. O’Neil’s first gym class?

6 x 4 =

each

24 students

multiplication

7 x 2 = 14 miles

per , each

Mrs. Chaiko baked 20 cookies for Thanksgiving. Ms. Fecho baked 3 times as many cookies. How many cookies did Ms. Fecho bake?

3 x 20 =

times as many

60 cookies

multiplication

7 x 2 = 14 miles

per , each , times as many

product

factors

groupsitems in each group

4 5 20

array

6 6 6 6 24

4 6 24